{"id":55,"date":"2023-09-17T07:25:59","date_gmt":"2023-09-17T07:25:59","guid":{"rendered":"https:\/\/mathority.org\/ja\/%e5%a4%9a%e9%a0%85%e5%bc%8f%e3%81%ae%e6%a0%b9\/"},"modified":"2023-09-17T07:25:59","modified_gmt":"2023-09-17T07:25:59","slug":"%e5%a4%9a%e9%a0%85%e5%bc%8f%e3%81%ae%e6%a0%b9","status":"publish","type":"post","link":"https:\/\/mathority.org\/ja\/%e5%a4%9a%e9%a0%85%e5%bc%8f%e3%81%ae%e6%a0%b9\/","title":{"rendered":"\u591a\u9805\u5f0f\u306e\u6839"},"content":{"rendered":"<p>\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u3001\u591a\u9805\u5f0f\u306e\u6839\u3068\u305d\u306e\u8a08\u7b97\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u591a\u9805\u5f0f\u306e\u6839\u3092\u6bb5\u968e\u7684\u306b\u89e3\u304f\u4f8b\u3084\u6f14\u7fd2\u3092\u898b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%C2%BFQue-son-las-raices-de-un-polinomio\"><\/span>\u591a\u9805\u5f0f\u306e\u6839\u306f\u4f55\u3067\u3059\u304b?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>\u6570\u5b66\u3067\u306f\u3001\u591a\u9805\u5f0f\u306e\u6839 (\u307e\u305f\u306f\u30bc\u30ed) \u306f\u3001\u591a\u9805\u5f0f\u3092\u6253\u3061\u6d88\u3059\u5024\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u591a\u9805\u5f0f\u306e\u6839\u306f\u3001\u591a\u9805\u5f0f\u3067\u8a55\u4fa1\u3055\u308c\u305f\u3068\u304d\u306b 0 \u306b\u7b49\u3057\u3044\u6570\u5024\u3092\u6301\u3064\u3059\u3079\u3066\u306e\u5024\u3067\u3059\u3002<\/strong><\/p>\n<p>\u6700\u7d42\u7684\u306b\u3001<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-2b24e8b3f28f048c85d6ea0f32d59fff_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x=a\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"43\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u591a\u9805\u5f0f\u306e\u6839\u3067\u3059<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a80be6e42ac3b3c6528958bbfa21f92c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"37\" style=\"vertical-align: -5px;\"><\/p>\n<p>\u3046\u3093<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-05f8ce1400e1aeecb7fc4e9548e2c5e3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(a)=0.\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"74\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/racines-ou-zeros-dun-polynome.png\" alt=\"\u591a\u9805\u5f0f\u306e\u6839\u307e\u305f\u306f\u30bc\u30ed\" class=\"wp-image-916\" width=\"170\" height=\"172\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p>\u305f\u3068\u3048\u3070\u3001\u6b21\u306e\u591a\u9805\u5f0f\u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-9f4ac06469282d1968cf43d2d7dc35ab_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(x)=x^2-3x+2\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"150\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> <em>x=1<\/em>\u306b\u304a\u3051\u308b\u591a\u9805\u5f0f\u306e\u6570\u5024\u306f\u30bc\u30ed\u306b\u7b49\u3057\u3044\u305f\u3081\u3001\u591a\u9805\u5f0f\u306e\u6839\u306e 1 \u3064\u304c 1 \u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-30a608c13e6fb189405ac92258df7e3e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(1)=1^2-3\\cdot 1+2 = 1-3+2 \\color{blue} \\bm{= 0}\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"312\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u4e00\u65b9\u30013 \u306f\u591a\u9805\u5f0f\u3092\u6253\u3061\u6d88\u3059\u5024\u3067\u306f\u306a\u3044\u305f\u3081\u3001\u591a\u9805\u5f0f\u306e\u6839\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3064\u307e\u308a\u3001 <em>x=3<\/em>\u306b\u304a\u3051\u308b\u591a\u9805\u5f0f\u306e\u6570\u5024\u306f\u30bc\u30ed\u3068\u306f\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b093c5f3d6e2bac6c79c9c0a73182f39_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(3)=3^2-3\\cdot 3+2 = 9-9+2=2  \\color{blue} \\bm{\\neq  0}\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"345\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u591a\u9805\u5f0f\u306e\u6839\u304c\u4f55\u3067\u3042\u308b\u304b\u306f\u3088\u304f\u7406\u89e3\u3067\u304d\u305f\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u591a\u9805\u5f0f\u306e\u6839\u304c\u4f55\u500b\u3042\u308b\u304b\u77e5\u308a\u305f\u304f\u3042\u308a\u307e\u305b\u3093\u304b?\u3042\u308b\u3044\u306f\u3001\u591a\u9805\u5f0f\u306e\u6839\u3092\u3059\u3079\u3066\u898b\u3064\u3051\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3057\u3087\u3046\u304b?\u305d\u3046\u3067\u3059\u306d\u3001\u305d\u308c\u306f\u307e\u3055\u306b\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u898b\u3066\u3044\u304d\u307e\u3059\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%C2%BFComo-calcular-todas-las-raices-de-un-polinomio\"><\/span>\u591a\u9805\u5f0f\u306e\u3059\u3079\u3066\u306e\u6839\u3092\u8a08\u7b97\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u591a\u9805\u5f0f\u306e\u6839\u3092\u3059\u3079\u3066\u898b\u3064\u3051\u308b\u306b\u306f\u3001\u6b21\u306e\u624b\u9806\u306b\u5f93\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol style=\"color:#ff5733; font-weight: bold;>\n<li><span style=\" color:#262626;font-weight:=\"\" normal;\"=\"\">\n<li style=\"margin-bottom:18px\"><span style=\"color:#000000;font-weight: normal;\">\u307e\u305a\u3001\u591a\u9805\u5f0f\u306e\u72ec\u7acb\u9805\u306e\u3059\u3079\u3066\u306e\u7d04\u6570\u304c\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002<\/span><\/li>\n<li style=\"margin-bottom:18px\"><span style=\"color:#000000;font-weight: normal;\">\u6b21\u306b\u3001\u524d\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u898b\u3064\u304b\u3063\u305f\u3059\u3079\u3066\u306e\u5024\u304c\u591a\u9805\u5f0f\u3067\u8a55\u4fa1\u3055\u308c\u307e\u3059\u3002<\/span><\/li>\n<li><span style=\"color:#000000;font-weight: normal;\">\u6700\u5f8c\u306b\u3001\u591a\u9805\u5f0f\u5185\u306e\u6570\u5024\u3092\u8a55\u4fa1\u3059\u308b\u3068\u304d\u306b\u305d\u306e\u6570\u5024\u304c\u30bc\u30ed\u306b\u7b49\u3057\u3044\u5834\u5408\u3001\u305d\u306e\u6570\u5024\u306f\u591a\u9805\u5f0f\u306e\u6839\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u3001\u305d\u306e\u6570\u306f\u591a\u9805\u5f0f\u306e\u6839\u306b\u5bfe\u5fdc\u3057\u307e\u305b\u3093\u3002<\/span><\/li>\n<\/ol>\n<p>\u3053\u306e\u624b\u9806\u306f<strong><span style=\"text-decoration: underline;\"><a href=\"https:\/\/mathority.org\/ja\/\u5270\u4f59\u5b9a\u7406\u306e\u4f8b\u3068\u6f14\u7fd2\u3092\u89e3\u6c7a\u3057\u307e\u3057\u305f\/\">\u5270\u4f59\u5b9a\u7406<\/a><\/span><\/strong>\u304b\u3089\u63a8\u5b9a\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u7279\u5b9a\u306e\u624b\u9806\u306e\u7406\u7531\u3092\u78ba\u8a8d\u3059\u308b\u306b\u306f\u3001\u3053\u306e\u30ea\u30f3\u30af\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u304f\u3060\u3055\u3044\u3002 <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ejemplo-de-como-se-calculan-las-raices-de-un-polinomio\"><\/span>\u591a\u9805\u5f0f\u306e\u6839\u3092\u8a08\u7b97\u3059\u308b\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4ee5\u4e0b\u3067\u306f\u3001\u591a\u9805\u5f0f\u306e\u6839\u3092\u6c42\u3081\u308b\u65b9\u6cd5\u3092\u3088\u308a\u3088\u304f\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u4f8b\u3092\u6bb5\u968e\u7684\u306b\u89e3\u6c7a\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u6b21\u306e\u591a\u9805\u5f0f\u306e\u6839\u306f\u3059\u3079\u3066\u4f55\u3067\u3059\u304b?<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-18b4f499034ee1404f872bd26694996e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(x) = x^2-5x+6\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"151\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u307e\u305a\u7b2c\u4e00\u306b\u3001\u72ec\u7acb\u9805\u306e\u7d04\u6570\u3092\u898b\u3064\u3051\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u591a\u9805\u5f0f\u306e\u3059\u3079\u3066\u306e\u6839\u3082\u72ec\u7acb\u9805\u306e\u7d04\u6570\u306b\u306a\u308b\u304b\u3089\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u30016 \u306e\u7d04\u6570\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\"> 6 \u306e\u7d04\u6570: +1\u3001-1\u3001+2\u3001-2\u3001+3\u3001-3<\/p>\n<p>\u6570\u5024\u304c\u7d04\u6570\u306e\u5834\u5408\u3001\u305d\u306e\u8ca0\u6570\u3082\u7d04\u6570\u3067\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u6570\u5024\u306f\u6b63\u306e\u6570\u3068\u8ca0\u306e\u6570\u3067\u5272\u308a\u5207\u308c\u308b\u306e\u3067\u3002<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u591a\u9805\u5f0f\u306e\u53ef\u80fd\u306a\u6839\u307e\u305f\u306f\u30bc\u30ed\u306f\u3001\u00b11\u3001\u00b12\u3001\u00b13 \u306b\u306a\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u3053\u308c\u3089\u3059\u3079\u3066\u306e\u5024\u306b\u5bfe\u3059\u308b\u591a\u9805\u5f0f\u306e\u6570\u5024\u3092\u6c7a\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u3053\u308c\u3092\u884c\u3046\u305f\u3081\u306b\u3001\u3053\u308c\u3089\u306e\u5024\u3092 x \u304c\u3042\u308b\u591a\u9805\u5f0f\u306e\u5f0f\u306b\u4ee3\u5165\u3057\u307e\u3059\u3002 <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-16fa59fcdbbaa92788e0292f40f15365_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(1) = 1^2 -5\\cdot 1 +6= 1 -5 +6 =2\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"285\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3e0acf6e160800e125f3efb9799e1cf2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(-1) = (-1)^2 -5\\cdot (-1) +6 =1+5+6 = 12\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"363\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-aad7d84847b59d9fa4d3ad780e20a5d4_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(2) = 2^2 -5\\cdot 2 +6 =4-10+6= \\color{blue} \\bm{0}\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"326\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-da1cb9edee6182d6abc4df0155acb975_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(-2) = (-2)^2 -5\\cdot (-2) +6 =4+10+6 =20\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"372\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-4122327630c5bd1d2835ff1ab612ab00_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(3) = 3^2 -5\\cdot 3 +6 =9-15+6=\\color{blue} \\bm{0}\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"326\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6fc3fe1dc37a53aa473b0ca773a5f500_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(-3) = (-3)^2 -5\\cdot (-3) +6 =9+15+6 =30\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"372\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u591a\u9805\u5f0f\u306f\u5909\u6570<em>x<\/em>\u304c +2 \u307e\u305f\u306f +3 \u306e\u5834\u5408\u306b\u306e\u307f\u6d88\u6ec5\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u591a\u9805\u5f0f\u306e\u6839\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<p class=\"has-text-align-center\"><strong>\u591a\u9805\u5f0f\u306e\u6839\u307e\u305f\u306f\u30bc\u30ed<\/strong>: +2 \u304a\u3088\u3073 +3<\/p>\n<p>\u4e00\u65b9\u3001\u591a\u9805\u5f0f\u306b\u306f\u6b21\u6570\u3068\u540c\u3058\u6570\u306e\u6839\u304c\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3064\u307e\u308a\u3001\u591a\u9805\u5f0f\u306f 2 \u6b21\u3067\u3042\u308b\u305f\u3081\u3001\u6839\u304c 2 \u3064\u3042\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u591a\u9805\u5f0f\u306e\u6839\u306e\u7279\u6027 (\u4e0b\u8a18) \u3067\u3001\u3053\u306e\u7279\u6027\u304c\u3069\u306e\u591a\u9805\u5f0f\u306b\u3082\u5e38\u306b\u5f53\u3066\u306f\u307e\u308b\u7406\u7531\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u591a\u9805\u5f0f\u306e\u6839\u3092\u6c42\u3081\u308b\u65b9\u6cd5\u3092\u8aac\u660e\u3057\u307e\u3057\u305f\u3002\u305f\u3060\u3057\u3001\u3053\u308c\u3092\u9054\u6210\u3059\u308b\u65b9\u6cd5\u306f\u4ed6\u306b\u3082\u3042\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u30eb\u30d5\u30a3\u30cb\u306e\u6cd5\u5247\u3092\u4f7f\u7528\u3057\u3066\u591a\u9805\u5f0f\u306e\u6839\u3092\u6c42\u3081\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30ea\u30f3\u30af\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u3001 <strong><span style=\"text-decoration: underline;\"><a href=\"https:\/\/mathority.org\/ja\/\u89e3\u6c7a\u3055\u308c\u305f\u30eb\u30fc\u30eb\u306e\u4f8b-\u30eb\u30c3\u30d5\u30a3\u30fc\u30cb\u6f14\u7fd2\/\">Ruffini \u30eb\u30fc\u30eb\u306e\u4f8b\u3092<\/a><\/span><\/strong>\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u3053\u3067\u306f\u3001\u3053\u306e\u3088\u304f\u77e5\u3089\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u306e\u69cb\u6210\u3068\u30012 \u3064\u306e\u624b\u9806\u306e\u9055\u3044\u304c\u308f\u304b\u308a\u307e\u3059\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Propiedades-de-las-raices-de-un-polinomio\"><\/span>\u591a\u9805\u5f0f\u306e\u6839\u306e\u6027\u8cea<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u591a\u9805\u5f0f\u306e\u6839\u307e\u305f\u306f\u30bc\u30ed\u306b\u306f\u6b21\u306e\u7279\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol start=\"1\" style=\"color:#ff5733; font-weight: bold;\">\n<li><span style=\"color:#0c0c0c;font-weight: normal;\">\u524d\u306b\u898b\u305f\u3088\u3046\u306b\u3001\u591a\u9805\u5f0f\u306e\u6574\u6570\u6839 (\u307e\u305f\u306f\u30bc\u30ed) \u306f\u3001\u591a\u9805\u5f0f\u306e\u72ec\u7acb\u9805\u306e\u7d04\u6570\u3067\u3059\u3002<\/span><\/li>\n<\/ol>\n<ol start=\"2\" style=\"color:#ff5733; font-weight: bold;\">\n<li><span style=\"color:#0c0c0c;font-weight: normal;\">\u591a\u9805\u5f0f\u306e\u6839\u304c\u3059\u3079\u3066\u308f\u304b\u3063\u3066\u3044\u308b\u5834\u5408\u3001\u305d\u306e\u591a\u9805\u5f0f\u3092\u6b21\u306e\u30bf\u30a4\u30d7\u306e\u4e8c\u9805\u7a4d\u306e\u5f62\u3067\u8868\u73fe\u3067\u304d\u307e\u3059\u3002\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ab8c02c3b91a39a9d1a155e9d0c5fa93_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(x-a).\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"58\" style=\"vertical-align: -5px;\"><\/p>\n<p><\/span><\/li>\n<\/ol>\n<p>\u305f\u3068\u3048\u3070\u3001\u591a\u9805\u5f0f<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-aa4ef60979e504a668114218a4258c12_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(x) =x^3+3x^2-x-3\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"190\" style=\"vertical-align: -5px;\"><\/p>\n<p>\u305d\u308c\u306b\u306f3\u3064\u306e\u6839\u304c\u3042\u308a\u3001<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3a62eca4d3d0e41d5d4b43e484a9b451_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x=+1, x=-1\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"120\" style=\"vertical-align: -4px;\"><\/p>\n<p>\u305d\u3057\u3066<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-18062540cd799901f80ebaea09891a13_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x=-3.\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"61\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u591a\u9805\u5f0f\u3092 3 \u3064\u306e\u56e0\u6570\u306e\u4e57\u7b97\u306e\u5f62\u5f0f\u3067\u66f8\u304d\u76f4\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5404\u56e0\u6570\u306f\u5909\u6570\u306b\u3088\u3063\u3066\u5f62\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ede05c264bba0eda080918aaa09c4658_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"10\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u305d\u3057\u3066\u30eb\u30fc\u30c8\u306e\u7b26\u53f7\u304c\u5909\u308f\u308a\u307e\u3057\u305f:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ce071610927d2723c8ac2e7b299c1c5d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\definecolor{vermell}{HTML}{F44336}\\definecolor{blau}{HTML}{2196F3}\\definecolor{verd}{HTML}{27AE60} P(x) =x^3+3x^2-x-3 \\ \\longrightarrow \\ \\text{ra\\'ices} \\begin{cases} x=\\color{verd}\\bm{+1} \\\\[2ex] x=\\color{vermell}\\bm{-1} \\\\[2ex] x=\\color{blau}\\bm{-3}\\end{cases}\" title=\"Rendered by QuickLaTeX.com\" height=\"131\" width=\"609\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a69abcf91f1dec9f01082f2d5866fa01_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\definecolor{vermell}{HTML}{F44336}\\definecolor{blau}{HTML}{2196F3}\\definecolor{verd}{HTML}{27AE60}P(x) =x^3+3x^2-x-3 = (x\\color{verd}\\bm{-1}\\color{black})\\cdot (x\\color{vermell}\\bm{+1}\\color{black}) \\cdot (x\\color{blau}\\bm{+3}\\color{black})\" title=\"Rendered by QuickLaTeX.com\" height=\"42\" width=\"582\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u3053\u308c\u306f\u591a\u9805\u5f0f\u56e0\u6570\u5206\u89e3\u3068\u547c\u3070\u308c\u307e\u3059\u3002\u5b9f\u969b\u3001\u591a\u9805\u5f0f\u306e\u6839\u3092\u6c42\u3081\u308b\u4e3b\u306a\u7528\u9014\u306e 1 \u3064\u306f\u3001\u591a\u9805\u5f0f\u3092\u56e0\u6570\u5206\u89e3\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u3053\u3068\u3067\u3059\u3002\u6b21\u306e\u30ea\u30f3\u30af\u3067\u306f\u3001\u3053\u306e\u975e\u5e38\u306b\u7279\u6b8a\u306a\u6f14\u7b97\u304c\u4f55\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3067\u304d\u3001\u3055\u3089\u306b\u3001<a href=\"https:\/\/mathority.org\/ja\"><strong><span style=\"text-decoration: underline;\">\u89e3\u304b\u308c\u305f\u591a\u9805\u5f0f\u56e0\u6570\u5206\u89e3\u6f14\u7fd2<\/span><\/strong><\/a>\u3067\u7df4\u7fd2\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<ol start=\"3\" style=\"color:#ff5733; font-weight: bold;\">\n<li><span style=\"color:#0c0c0c;font-weight: normal;\">\u591a\u9805\u5f0f\u306b\u306f\u3001\u6b21\u6570\u304c\u793a\u3059\u306e\u3068\u540c\u3058\u6570\u306e\u6839\u304c\u3042\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u30012 \u6b21\u591a\u9805\u5f0f\u306b\u306f 2 \u3064\u306e\u6839\u304c\u3042\u308a\u30013 \u6b21\u591a\u9805\u5f0f\u306b\u306f 3 \u3064\u306e\u6839\u304c\u3042\u308a\u30014 \u6b21\u591a\u9805\u5f0f\u306b\u306f 4 \u3064\u306e\u6839\u304c\u3042\u308a\u3001\u4ee5\u4e0b\u540c\u69d8\u306b\u306a\u308a\u307e\u3059\u3002<\/span><\/li>\n<\/ol>\n<ol start=\"4\" style=\"color:#ff5733; font-weight: bold;\">\n<li><span style=\"color:#0c0c0c;font-weight: normal;\">\u591a\u9805\u5f0f\u306b\u72ec\u7acb\u3057\u305f\u9805\u304c\u306a\u3044\u5834\u5408\u3001\u305d\u306e\u6839\u306e 1 \u3064\u304c 0 \u3067\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u3001\u6b8b\u308a\u306e\u6839\u306f\u6700\u4f4e\u6b21\u6570\u306e\u5358\u9805\u5f0f\u306e\u4fc2\u6570\u306e\u7d04\u6570\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/span><\/li>\n<\/ol>\n<p>\u305f\u3068\u3048\u3070\u3001\u6b21\u306e\u591a\u9805\u5f0f\u306b\u306f\u72ec\u7acb\u9805\u304c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-06bfb6282e808e7365c497c01ff60eee_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(x) =x^3+x^2-2x\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"159\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u591a\u9805\u5f0f\u306e 1 \u3064\u306e\u6839\u306f\u5fc5\u305a 0 \u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u305d\u3057\u3066\u3001\u6b8b\u308a\u306e\u6839\u306f\u6700\u4f4e\u6b21\u9805\u306e\u4fc2\u6570\u306e\u7d04\u6570\u3001\u3064\u307e\u308a -2 \u306b\u306a\u308a\u307e\u3059\u3002\u3088\u308a\u6b63\u78ba\u306b\u306f\u3001\u4ed6\u306e\u30eb\u30fc\u30c8\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-eec86cbca5afb38459e47b0dce5eb23a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x=+1\" title=\"Rendered by QuickLaTeX.com\" height=\"14\" width=\"56\" style=\"vertical-align: -2px;\"><\/p>\n<p>\u305d\u3057\u3066<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ffba38287436639a3011d50b97654cd0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x=-2,\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"61\" style=\"vertical-align: -4px;\"><\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u591a\u9805\u5f0f\u306e\u6839\u306f\u3059\u3079\u3066\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\">\u591a\u9805\u5f0f\u306e\u6839\u307e\u305f\u306f\u30bc\u30ed: 0\u3001+1\u3001\u304a\u3088\u3073 -2<\/p>\n<ol start=\"5\" style=\"color:#ff5733; font-weight: bold;\">\n<li><span style=\"color:#0c0c0c;font-weight: normal;\">\u591a\u9805\u5f0f\u306e\u6839\u3092\u6c7a\u5b9a\u3067\u304d\u306a\u3044\u5834\u5408\u3001\u305d\u308c\u306f\u65e2\u7d04\u591a\u9805\u5f0f\u3067\u3042\u308b\u3068\u8a00\u308f\u308c\u307e\u3059\u3002<\/span><\/li>\n<\/ol>\n<p>\u305f\u3068\u3048\u3070\u3001\u6b21\u306e\u591a\u9805\u5f0f\u306e\u6839\u3092\u8a08\u7b97\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-4d20f05e1f8e2433a542f83bfaf519e6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(x) =x^2+3x-1\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"150\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u591a\u9805\u5f0f\u306e\u53ef\u80fd\u306a\u6839\u306f\u3001-1 \u306e\u7d04\u6570\u3001\u3064\u307e\u308a -1 \u3068 +1 \u3060\u3051\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u591a\u9805\u5f0f\u3092\u6b21\u306e\u5024\u306b\u8a55\u4fa1\u3057\u307e\u3059\u3002<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c1128c014be9c5f642dd8a249c0fc7bf_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(1) = 1^2 +3\\cdot 1 -1= 1 +3 -1 =3 \\neq 0\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"318\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-15853e7e7134e2b54d4470568ea6b92a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(-1) = (-1)^2 +3\\cdot (-1)-1 =1-3-1 =-3 \\neq 0\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"401\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u3069\u306e\u3088\u3046\u306a\u5834\u5408\u3067\u3082\u591a\u9805\u5f0f\u306f\u30ad\u30e3\u30f3\u30bb\u30eb\u3055\u308c\u306a\u3044\u305f\u3081\u3001\u6839\u304c\u306a\u304f\u3001\u3057\u305f\u304c\u3063\u3066\u65e2\u7d04\u591a\u9805\u5f0f\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<ol start=\"6\" style=\"color:#ff5733; font-weight: bold;\">\n<li><span style=\"color:#0c0c0c;font-weight: normal;\">\u591a\u9805\u5f0f\u304c\u8907\u6570\u306e\u591a\u9805\u5f0f\u306e\u7a4d\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u6839\u3092\u8a08\u7b97\u3059\u308b\u305f\u3081\u306b\u3053\u306e\u7a4d\u3092\u884c\u3046\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u591a\u9805\u5f0f\u306e\u6839\u306f\u4e57\u7b97\u3055\u308c\u305f\u5404\u4fc2\u6570\u306e\u6839\u3067\u3059\u3002<\/span><\/li>\n<\/ol>\n<p>\u305f\u3068\u3048\u3070\u3001\u6b21\u306e\u591a\u9805\u5f0f\u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c5b7b6a31a96b6ed2e2e0187ea6aa8ba_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(x) = (x-2) \\cdot (x+1)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"182\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u591a\u9805\u5f0f\u306e\u6839\u306e 2 \u756a\u76ee\u306e\u7279\u6027\u304b\u3089\u3001\u5de6\u306e\u591a\u9805\u5f0f\u306e\u6839\u306f +2\u3001\u53f3\u306e\u591a\u9805\u5f0f\u306e\u6839\u306f -1 \u3067\u3042\u308b\u3068\u63a8\u6e2c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-18a96a84b626c71b099da0c446b6367f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle (x-2) \\ \\longrightarrow \\ \\text{ra\\'iz} \\ x=+2\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"194\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-10dab76581eedafb14febe2a82f03005_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle (x+1) \\ \\longrightarrow \\ \\text{ra\\'iz} \\ x=-1\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"194\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u30012 \u3064\u306e\u56e0\u6570\u306e\u4e57\u7b97\u304b\u3089\u5f97\u3089\u308c\u308b\u591a\u9805\u5f0f\u306e\u6839\u306f\u3001\u305d\u308c\u305e\u308c\u306e\u6839\u3001\u3064\u307e\u308a +2 \u3068 -1 \u306b\u306a\u308a\u307e\u3059\u3002 <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-416399918b5a2a051a6bfc7343ef7960_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle  P(x) = (x-2) \\cdot (x+1) \\ \\longrightarrow \\ \\text{ra\\'ices} \\ \\begin{cases}x=+2  \\\\[2ex] x=-1 \\end{cases}\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"357\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ejercicios-resueltos-de-raices-de-polinomios\"><\/span>\u591a\u9805\u5f0f\u306e\u6839\u306b\u95a2\u3059\u308b\u89e3\u6c7a\u6e08\u307f\u6f14\u7fd2<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 class=\"wp-block-heading\">\u6f14\u7fd2 1<\/h3>\n<p>\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u307e\u3059<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-4c11e65374dfa6f887fb53ffc5765aed_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x = -4\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"57\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u306f\u6b21\u306e\u591a\u9805\u5f0f\u306e\u6839\u3067\u3059\u3002 <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-af9bc84f96cb9f496322a41fe8818906_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(x)=x^3+2x^2-11x-12\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"216\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__DDF5FF\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#DDF5FF\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"><strong>\u89e3\u6c7a\u7b56\u3092\u898b\u308b<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u306b\u306f<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b3dc975a98ccada6f136856736d7df06_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x=-4\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"57\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u306f\u591a\u9805\u5f0f\u306e\u6839\u306a\u306e\u3067\u3001\u305d\u306e\u5024\u306b\u8a55\u4fa1\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u3060\uff1a<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-0c88c4456693b0c57d55aba68287414c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{aligned}P(-4)&amp; =(-4)^3+2\\cdot (-4)^2-11\\cdot (-4) -12 \\\\[2ex] &amp; = -64+2\\cdot 16 +44 -12 \\\\[2ex] &amp; = -64+32+44 -12 \\\\[2ex] &amp; = 0 \\end{aligned}\" title=\"Rendered by QuickLaTeX.com\" height=\"142\" width=\"333\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u306e\u591a\u9805\u5f0f\u306e\u6570\u5024<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b3dc975a98ccada6f136856736d7df06_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x=-4\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"57\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u306f\u30bc\u30ed\u3067\u3042\u308b\u305f\u3081\u3001\u4e8b\u5b9f\u4e0a\u591a\u9805\u5f0f\u306e\u6839\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">\u6f14\u7fd2 2<\/h3>\n<p>\u6b21\u306e\u591a\u9805\u5f0f\u306e\u6839\u3092\u3059\u3079\u3066\u8a08\u7b97\u3057\u307e\u3059\u3002 <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-9f4ac06469282d1968cf43d2d7dc35ab_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(x)=x^2-3x+2\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"150\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__DDF5FF\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#DDF5FF\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"><strong>\u89e3\u6c7a\u7b56\u3092\u898b\u308b<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u307e\u305a\u3001\u591a\u9805\u5f0f\u306e\u53ef\u80fd\u306a\u6839\u3092\u898b\u3064\u3051\u308b\u306b\u306f\u3001\u72ec\u7acb\u9805\u306e\u7d04\u6570\u3092\u898b\u3064\u3051\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u30012 \u306e\u7d04\u6570\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\"> 2 \u306e\u7d04\u6570: +1\u3001-1\u3001+2\u3001-2<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u3001\u591a\u9805\u5f0f\u306e\u53ef\u80fd\u306a\u6839\u307e\u305f\u306f\u30bc\u30ed\u306f\u3001\u00b11 \u3068 \u00b12 \u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u3053\u308c\u3089\u3059\u3079\u3066\u306e\u5024\u3067\u591a\u9805\u5f0f\u304c\u3069\u306e\u7a0b\u5ea6\u306b\u306a\u308b\u304b\u3092\u8a08\u7b97\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-41fba5390c3cecf1515f0a03890981a6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(1)=1^2-3\\cdot 1+2 =1-3+2=0\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"286\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c8bfa6157619295c166a356db7b6fd1a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(-1)=(-1)^2-3\\cdot (-1)+2 =1+3+2=6\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"355\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b6c2ccc218c0f8e8ffd9eb599a0063b0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(2)=2^2-3\\cdot 2+2 =4-6+2=0\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"286\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d10352d63709d5958d81f4910c0bf9cd_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(-2)=(-2)^2-3\\cdot (-2)+2 =4+6+2=12\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"363\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u3001 <em>x<\/em>\u304c +1 \u307e\u305f\u306f +2 \u306e\u5834\u5408\u3001\u591a\u9805\u5f0f\u306f\u6d88\u6ec5\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u591a\u9805\u5f0f\u306e\u6839\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<p class=\"has-text-align-center\"><strong>\u591a\u9805\u5f0f\u306e\u6839\u307e\u305f\u306f\u30bc\u30ed<\/strong>: +1 \u304a\u3088\u3073 +2<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">\u6f14\u7fd2 3<\/h3>\n<p>\u6b21\u306e\u591a\u9805\u5f0f\u306e\u6839\u3092\u6c42\u3081\u307e\u3059\u3002 <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-dd0105a18a9affad36c35065a8460095_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(x)=x^3-x^2-4x+4\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"190\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__DDF5FF\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#DDF5FF\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"><strong>\u89e3\u6c7a\u7b56\u3092\u898b\u308b<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u591a\u9805\u5f0f\u306e\u6839\u3082\u72ec\u7acb\u9805\u306e\u7d04\u6570\u3067\u3042\u308b\u305f\u3081\u3001\u6700\u521d\u306b\u72ec\u7acb\u9805\u306e\u7d04\u6570\u3092\u898b\u3064\u3051\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u30014 \u306e\u7d04\u6570\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\"> 4 \u306e\u7d04\u6570: +1\u3001-1\u3001+2\u3001-2\u3001+4\u3001-4<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u3001\u591a\u9805\u5f0f\u306e\u53ef\u80fd\u306a\u6839\u307e\u305f\u306f\u30bc\u30ed\u306f\u3001\u00b11\u3001\u00b12\u3001\u304a\u3088\u3073 \u00b14 \u306b\u306a\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u3053\u308c\u3089\u3059\u3079\u3066\u306e\u5024\u304b\u3089\u591a\u9805\u5f0f\u306e\u6570\u5024\u3092\u898b\u3064\u3051\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-49c2352542c6a029b23b2f23f505e2d7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(1)=1^3-1^2-4\\cdot 1+4  =1-1-4+4=0\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"354\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-1d1819dce07b117e3afc654b4c3b6f0c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(-1)=(-1)^3-(-1)^2-4\\cdot (-1)+4 =-1-1+4+4=6\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"465\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-1732090f2003d044169d6fec895e790e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(2)=2^3-2^2-4\\cdot 2+4 =8-4-8+4=0\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"354\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d825dc0a2c377ab13e3c1b404252d2eb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(-2)=(-2)^3-(-2)^2-4\\cdot (-2)+4 =-8-4+8+4=0\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"465\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-eacdec999ade2fcddaa431651bb5a24a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(3)=3^3-3^2-4\\cdot 3+4 =27-9-12+4=10\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"381\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d9db73e42d678a731d3343d3b9d61aad_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(-3)=(-3)^3-(-3)^2-4\\cdot (-3)+4 =-27-9+12+4=20\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"491\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u3001\u591a\u9805\u5f0f\u306f<em>x<\/em>\u304c +1\u3001+2\u3001\u307e\u305f\u306f -2 \u306e\u5834\u5408\u306b\u306e\u307f\u6d88\u6ec5\u3059\u308b\u305f\u3081\u3001\u591a\u9805\u5f0f\u306e\u6839\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\"><strong>\u591a\u9805\u5f0f\u306e\u6839\u307e\u305f\u306f\u30bc\u30ed<\/strong>: +1\u3001+2\u3001\u304a\u3088\u3073 -2<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">\u6f14\u7fd2 4<\/h3>\n<p>\u6b21\u306e\u591a\u9805\u5f0f\u306e\u6839\u3092\u6c42\u3081\u307e\u3059\u3002 <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-dc922d3e38a3393ff70f5f382ea9518a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(x)=x^3-6x^2+8x\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"168\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__DDF5FF\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#DDF5FF\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"><strong>\u89e3\u6c7a\u7b56\u3092\u898b\u308b<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u3053\u306e\u5834\u5408\u3001\u591a\u9805\u5f0f\u306b\u306f\u72ec\u7acb\u3057\u305f\u9805\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u4e0a\u3067\u8aac\u660e\u3057\u305f\u6839\u306e 4 \u756a\u76ee\u306e\u6027\u8cea\u306b\u3088\u308c\u3070\u3001\u591a\u9805\u5f0f\u306e\u6839\u306e 1 \u3064\u306f 0 \u3067\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\">\u591a\u9805\u5f0f\u306e\u6839:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-8203ced39e0cdafefa708857c7ec2264_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x=0\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"43\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3055\u3089\u306b\u3001\u3053\u306e\u5834\u5408\u3001\u8003\u3048\u3089\u308c\u308b\u6839\u306f\u72ec\u7acb\u9805\u306e\u7d04\u6570\u3067\u306f\u306a\u304f\u3001\u6700\u4e0b\u4f4d\u9805\u306e\u4fc2\u6570\u306e\u7d04\u6570\u3001\u3064\u307e\u308a 8 \u3067\u3059\u3002<\/p>\n<p class=\"has-text-align-center\"> 8 \u306e\u7d04\u6570: +1\u3001-1\u3001+2\u3001-2\u3001+4\u3001-4\u3001+8\u3001-8<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u3001\u591a\u9805\u5f0f\u306e\u53ef\u80fd\u306a\u6839\u307e\u305f\u306f\u30bc\u30ed\u306f\u3001\u00b11\u3001\u00b12\u3001\u00b14\u3001\u304a\u3088\u3073 \u00b18 \u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u3053\u308c\u3089\u3059\u3079\u3066\u306e\u5024\u3067\u591a\u9805\u5f0f\u306e\u6570\u5024\u3092\u8a08\u7b97\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-5924a559a5d5fda73011bcc015baf065_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(1)=1^3-6\\cdot 1^2+8\\cdot 1 = 1-6+8=3\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"315\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f32e3cf981a0aadf450398e01009ca32_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(-1)=(-1)^3-6\\cdot (-1)^2+8\\cdot (-1) = -1-6-8=-15\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"447\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-cf97abc29d59bc2bd3ccd23c0dc4c65e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(2)=2^3-6\\cdot 2^2+8\\cdot 2 = 8-24+16=0\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"333\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-bfbaf3ddbb35e0e6b0485f470b1d728e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(-2)=(-2)^3-6\\cdot (-2)^2+8\\cdot (-2) = -8-24-16=-48\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"466\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-e0dbed0cbe6b8d889baa7f0bd1defd25_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(4)=4^3-6\\cdot 4^2+8\\cdot 4 = 64-96+32=0\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"342\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a055f8dc436c65e9419e66d9af651518_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(-4)=(-4)^3-6\\cdot (-4)^2+8\\cdot (-4) = -64-96-32=-192\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"483\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-907d1e28e52de3fb47a1c043f30f9ae2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(8)=8^3-6\\cdot 8^2+8\\cdot 8 = 512-384+64=192\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"376\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-909a39e1a028550d7668da5b6bc4b645_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(-8)=(-8)^3-6\\cdot (-8)^2+8\\cdot (-8) = -512-384-64=-960\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"502\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u3001 <em>x \u304c<\/em>+2 \u307e\u305f\u306f +4 \u306b\u306a\u308b\u3068\u591a\u9805\u5f0f\u304c\u6d88\u3048\u308b\u306e\u3067\u3001\u3053\u308c\u3089\u306e\u5024\u304c\u591a\u9805\u5f0f\u306e\u6839\u306b\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u554f\u984c\u306e\u6700\u521d\u306b\u898b\u3064\u3051\u305f\u30eb\u30fc\u30c8 0 \u3082\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u7d50\u8ad6\u3068\u3057\u3066\u3001\u591a\u9805\u5f0f\u306e\u6839\u306f\u3059\u3079\u3066\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\"><strong>\u591a\u9805\u5f0f\u306e\u6839\u307e\u305f\u306f\u30bc\u30ed<\/strong>: 0\u3001+2\u3001+4<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">\u6f14\u7fd2 5<\/h3>\n<p>\u591a\u9805\u5f0f\u306e\u6839\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u3066\u3001\u6b21\u306e\u591a\u9805\u5f0f\u306e\u6839\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002 <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c4239d0a1f7d60dc0777b21e2358fe0d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(x)=(x-1)(x+3)(x^2-x-2)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"263\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__DDF5FF\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#DDF5FF\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"><strong>\u89e3\u6c7a\u7b56\u3092\u898b\u308b<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u6839\u306e 6 \u756a\u76ee\u306e\u6027\u8cea\u3067\u898b\u305f\u3088\u3046\u306b\u3001\u591a\u9805\u5f0f\u304c\u56e0\u5b50\u306e\u7a4d\u306b\u3088\u3063\u3066\u5f62\u6210\u3055\u308c\u308b\u5834\u5408\u3001\u591a\u9805\u5f0f\u5168\u4f53\u306e\u6839\u304c\u5404\u56e0\u5b50\u306e\u6839\u3067\u3042\u308b\u305f\u3081\u3001\u3059\u3079\u3066\u306e\u6839\u3092\u8a08\u7b97\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p class=\"has-text-align-left\">\u3055\u3089\u306b\u3001\u591a\u9805\u5f0f\u306e\u6839\u306e 2 \u756a\u76ee\u306e\u7279\u6027\u304b\u3089\u3001\u6700\u521d\u306e\u56e0\u5b50\u306e\u6839\u306f +1 \u3067\u3042\u308a\u30012 \u756a\u76ee\u306e\u56e0\u5b50\u306e\u6839\u306f -3 \u3067\u3042\u308b\u3068\u63a8\u5b9a\u3067\u304d\u307e\u3059\u3002 <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-607af42f41a1a5a52051391d5d47ca3c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle (x-1) \\ \\longrightarrow \\ \\text{ra\\'iz} \\ x=+1\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"194\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-791d22dce6bc5be0f80587bcb546aa7c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle (x+3) \\ \\longrightarrow \\ \\text{ra\\'iz} \\ x=-3\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"195\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u3001\u6700\u5f8c\u306e\u8981\u7d20\u306e\u6839\u3092\u898b\u3064\u3051\u308b\u5fc5\u8981\u304c\u3042\u308b\u3060\u3051\u3067\u3059\u3002\u3053\u308c\u3092\u884c\u3046\u306b\u306f\u3001\u72ec\u7acb\u9805\u306e\u7d04\u6570 (-2) \u3092\u6c42\u3081\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\"> -2 \u306e\u7d04\u6570: +1\u3001-1\u3001+2\u3001-2<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u3001\u6700\u5f8c\u306e\u591a\u9805\u5f0f\u306e\u53ef\u80fd\u306a\u6839\u307e\u305f\u306f\u30bc\u30ed\u306f\u3001\u00b11 \u3068 \u00b12 \u3067\u3059\u3002\u3053\u308c\u3092\u4f7f\u7528\u3057\u3066\u3001\u3053\u308c\u3089\u3059\u3079\u3066\u306e\u5024\u306b\u304a\u3051\u308b\u591a\u9805\u5f0f\u306e\u6570\u5024\u3092\u8a08\u7b97\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-bbe8195e9f2004a13690e93c706dda7f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"q(x)= x^2-x-2\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"135\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-99c067ce0e31bf3211cca04bcfce7426_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"q(1)=1^2-1-2=1-1-2=-2\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"272\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f1180dacd124c0c5f5b638814d572bcf_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"q(-1)=(-1)^2-(-1)-2=1+1-2=0\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"328\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a685aef3ac803e8600783a6b05555479_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"q(2)=2^2-2-2=4-2-2=0\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"259\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-0311cf59227e5a6fcd7b92715e080f06_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"q(-2)=(-2)^2-(-2)-2=4+2-2=4\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"328\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u3001\u53f3\u5074\u306e\u591a\u9805\u5f0f\u306e\u6839\u306f -1 \u3068 2 \u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u3001\u591a\u9805\u5f0f\u5168\u4f53\u306e\u6839\u306f\u3001\u898b\u3064\u304b\u3063\u305f\u3059\u3079\u3066\u306e\u6839\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\"><strong>\u591a\u9805\u5f0f\u306e\u6839\u307e\u305f\u306f\u30bc\u30ed<\/strong>: +1\u3001-1\u3001+2\u3001-3 <\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<div id=\"ezoic-pub-ad-placeholder-176\" data-inserter-version=\"-1\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u3001\u591a\u9805\u5f0f\u306e\u6839\u3068\u305d\u306e\u8a08\u7b97\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u591a\u9805\u5f0f\u306e\u6839\u3092\u6bb5\u968e\u7684\u306b\u89e3\u304f\u4f8b\u3084\u6f14\u7fd2\u3092\u898b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u591a\u9805\u5f0f\u306e\u6839\u306f\u4f55\u3067\u3059\u304b? \u6570\u5b66\u3067\u306f\u3001\u591a\u9805\u5f0f\u306e\u6839 (\u307e\u305f\u306f\u30bc\u30ed) \u306f\u3001\u591a\u9805\u5f0f\u3092\u6253\u3061\u6d88\u3059\u5024\u3067\u3059\u3002\u3064\u307e\u308a &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathority.org\/ja\/%e5%a4%9a%e9%a0%85%e5%bc%8f%e3%81%ae%e6%a0%b9\/\"> <span class=\"screen-reader-text\">\u591a\u9805\u5f0f\u306e\u6839<\/span> \u3082\u3063\u3068\u8aad\u3080 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