{"id":338,"date":"2023-07-06T04:01:11","date_gmt":"2023-07-06T04:01:11","guid":{"rendered":"https:\/\/mathority.org\/ja\/%e7%ab%8b%e6%96%b9%e4%bd%93%e3%81%ae%e5%92%8c\/"},"modified":"2023-07-06T04:01:11","modified_gmt":"2023-07-06T04:01:11","slug":"%e7%ab%8b%e6%96%b9%e4%bd%93%e3%81%ae%e5%92%8c","status":"publish","type":"post","link":"https:\/\/mathority.org\/ja\/%e7%ab%8b%e6%96%b9%e4%bd%93%e3%81%ae%e5%92%8c\/","title":{"rendered":"\u7acb\u65b9\u4f53\u306e\u548c"},"content":{"rendered":"<p>\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u3001\u7acb\u65b9\u4f53\u306e\u5408\u8a08\u306e\u516c\u5f0f\u3068\u3001\u7acb\u65b9\u4f53\u306e\u5408\u8a08\u304c\u3069\u306e\u3088\u3046\u306b\u56e0\u6570\u5206\u89e3\u3055\u308c\u308b\u304b\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u7acb\u65b9\u4f53\u306e\u548c\u306b\u95a2\u3059\u308b\u3044\u304f\u3064\u304b\u306e\u4f8b\u3068\u89e3\u7b54\u6e08\u307f\u306e\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-es-la-suma-de-cubos\"><\/span>\u7acb\u65b9\u4f53\u306e\u5408\u8a08\u306f\u3044\u304f\u3089\u3067\u3059\u304b?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>\u7acb\u65b9\u4f53\u306e\u548c\u306f<\/strong>\u4e8c\u9805\u5f0f (\u5358\u9805\u5f0f\u304c 2 \u3064\u3060\u3051\u3042\u308b\u591a\u9805\u5f0f) \u3067\u3042\u308a\u3001\u305d\u306e 2 \u3064\u306e\u9805\u306f\u6b63\u3067\u3042\u308a\u3001\u3055\u3089\u306b\u3001\u305d\u308c\u3089\u306e\u4e09\u6b21\u6839\u306f\u6b63\u78ba\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u7acb\u65b9\u4f53\u306e\u548c\u306e\u4ee3\u6570\u5f0f\u306f<strong>a <sup>3<\/sup> +b <sup>3<\/sup><\/strong>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3055\u3089\u306b\u3001\u5b8c\u5168\u306a\u7acb\u65b9\u4f53\u306e\u5408\u8a08\u306f\u6ce8\u76ee\u3059\u3079\u304d\u7a4d (\u307e\u305f\u306f\u6ce8\u76ee\u3059\u3079\u304d\u6052\u7b49) \u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u591a\u304f\u306e\u8a08\u7b97\u3092\u884c\u308f\u305a\u306b\u305d\u308c\u3092\u76f4\u63a5\u89e3\u304f\u516c\u5f0f\u304c\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u6b21\u306b\u3001\u305d\u308c\u304c\u3069\u306e\u3088\u3046\u306b\u884c\u308f\u308c\u308b\u304b\u3092\u898b\u3066\u3044\u304d\u307e\u3059\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Formula-de-la-suma-de-cubos\"><\/span>\u7acb\u65b9\u4f53\u306e\u548c\u306e\u516c\u5f0f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u7acb\u65b9\u4f53\u306e\u548c\u306e\u6570\u5b66\u7684\u5b9a\u7fa9\u3092\u7406\u89e3\u3057\u305f\u3089\u3001\u6b21\u306f\u7acb\u65b9\u4f53\u306e\u548c\u306e\u516c\u5f0f\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002 <\/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\/formule-de-la-somme-des-cubes.png\" alt=\"\u7acb\u65b9\u4f53\u306e\u548c\u306e\u516c\u5f0f\" class=\"wp-image-2663\" width=\"306\" height=\"307\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p>\u3057\u305f\u304c\u3063\u3066\u30012 \u3064\u306e 3 \u4e57\u9805\u306e\u5408\u8a08\u306f\u3001\u3053\u308c\u3089 2 \u3064\u306e\u9805\u306e\u5408\u8a08\u306b\u6700\u521d\u306e\u9805\u306e 2 \u4e57\u3092\u4e57\u3058\u30012 \u3064\u306e\u91cf\u306e\u7a4d\u3092\u6e1b\u7b97\u3057\u30012 \u756a\u76ee\u306e\u9805\u306e 2 \u4e57\u3092\u52a0\u3048\u305f\u3082\u306e\u306b\u7b49\u3057\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u5b8c\u5168\u7acb\u65b9\u4f53\u306e\u548c\u306e\u516c\u5f0f\u3092\u9069\u7528\u3059\u308b\u3068\u3001\u591a\u9805\u5f0f\u306e\u5f0f\u3092 2 \u3064\u306e\u56e0\u6570\u306e\u7a4d\u306b\u5909\u63db\u3059\u308b\u305f\u3081\u3001\u5b9f\u969b\u306b\u306f\u591a\u9805\u5f0f\u3092\u56e0\u6570\u5206\u89e3\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u591a\u9805\u5f0f\u306e\u56e0\u6570\u5206\u89e3\u306e\u610f\u5473\u304c\u307e\u3060\u308f\u304b\u3089\u306a\u3044\u5834\u5408\u306f\u3001\u7d9a\u884c\u3059\u308b\u524d\u306b<a href=\"https:\/\/mathority.org\/ja\"><strong><span style=\"text-decoration: underline;\">\u591a\u9805\u5f0f\u306e\u56e0\u6570\u5206\u89e3<\/span><\/strong><\/a>\u65b9\u6cd5\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ejemplos-de-factorizaciones-de-sumas-de-cubos\"><\/span>\u7acb\u65b9\u4f53\u306e\u5408\u8a08\u3092\u56e0\u6570\u5206\u89e3\u3059\u308b\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5b8c\u5168\u7acb\u65b9\u4f53\u306e\u548c\u306e\u6982\u5ff5\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u3001\u6b21\u306e\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u7acb\u65b9\u4f53\u306e\u548c\u3092\u56e0\u6570\u5206\u89e3\u3059\u308b\u4f8b\u3092\u3044\u304f\u3064\u304b\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u4f8b1<\/h3>\n<ul>\n<li>\u6b21\u306e\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u3001\u6b21\u306e\u7acb\u65b9\u4f53\u306e\u5408\u8a08\u3092\u56e0\u6570\u5206\u89e3\u3057\u307e\u3059\u3002<\/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-51a33d4fd52d94afa78abd4be81cf7f3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x^3+8\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"48\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p>\u78ba\u304b\u306b\u3001\u5358\u9805\u5f0f\u306e\u7acb\u65b9\u6839\u306a\u306e\u3067\u3001\u3053\u308c\u306f\u7acb\u65b9\u4f53\u306e\u548c\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-a5e0e31e823b4d5c9a90c0d01d5e8fcb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x^3\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"17\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u306f\u6b63\u78ba\u3067\u3059 (10 \u9032\u6570\u306f\u8868\u793a\u3055\u308c\u307e\u305b\u3093)\u3002\u6570\u5b57\u306e 8 \u3082\u540c\u69d8\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-1105a3d4349d8c5d3eae7b16dc079ef1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\sqrt[3]{x^3} = x\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"65\" style=\"vertical-align: -1px;\"><\/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-71ce4de717d54a2fb6c3282de038913a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\sqrt[3]{8} = 2\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"54\" style=\"vertical-align: -2px;\"><\/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-4171629bd68508074adfbf81cf982b5f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x^3+8=x^3+2^3\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"127\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u4e09\u6b21\u548c\u306e\u516c\u5f0f\u3092\u9069\u7528\u3057\u3066\u3001\u4e09\u6b21\u5f0f\u3092\u4e8c\u9805\u5f0f\u3068\u4e09\u9805\u5f0f\u306e\u7a4d\u306b\u5909\u63db\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-261e42482dc7545bb617e1d662dd2cc0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a^3+b^3  = (a+b)(a^2-ab+b^2)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"236\" 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-62bca2a2972fa58da86d3a6dca21e62e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x^3 +2^3 = (x+2)(x^2-x \\cdot 2 + 2^2)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"257\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u305d\u3057\u3066\u6700\u5f8c\u306b\u3001\u4e57\u7b97\u3068\u3079\u304d\u4e57\u3092\u89e3\u304f\u3060\u3051\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-0993ec317132eea25d3144b4f2fe61f3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x^3 +2^3 = (x+2)(x^2-2x + 4)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"236\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u5f97\u3089\u308c\u305f\u5f0f\u3092\u3088\u304f\u898b\u308b\u3068\u3001\u7acb\u65b9\u4f53\u306e\u548c\u306e\u516c\u5f0f\u306e\u304a\u304b\u3052\u3067<a href=\"https:\/\/mathority.org\/ja\/\u591a\u9805\u5f0f\u306e\u6839\/\"><strong><span style=\"text-decoration: underline;\">\u3001\u591a\u9805\u5f0f\u306e\u6839\u3092\u7c21\u5358\u306b\u898b\u3064\u3051\u308b<\/span><\/strong><\/a>\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3001\u591a\u9805\u5f0f\u306e\u6839\u306e 1 \u3064\u306f\u6b21\u306e\u3088\u3046\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-86f872935a384592f05d5fdc077a0a0f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x=-2.\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"61\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u305f\u3060\u3057\u3001\u591a\u9805\u5f0f\u306e\u3059\u3079\u3066\u306e\u6839 (\u307e\u305f\u306f\u30bc\u30ed) \u3092\u898b\u3064\u3051\u308b\u306b\u306f\u3001\u3088\u308a\u8907\u96d1\u306a\u624b\u9806\u306b\u5f93\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u65b9\u6cd5\u306b\u3064\u3044\u3066\u306f\u3001\u30ea\u30f3\u30af\u5148\u306e\u30da\u30fc\u30b8\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u4f8b 2<\/h3>\n<ul>\n<li>\u5b8c\u5168\u7acb\u65b9\u4f53\u306e\u548c\u306e\u516c\u5f0f\u3092\u9069\u7528\u3057\u3066\u3001\u6b21\u306e\u4e8c\u9805\u3092\u56e0\u6570\u5206\u89e3\u3057\u307e\u3059\u3002<\/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-98f53ef4a4c3c39ecc0682c8d3df7666_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"8x^3+1\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"56\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p>\u3053\u306e\u4f8b\u306e\u591a\u9805\u5f0f\u3082\u7acb\u65b9\u4f53\u306e\u548c\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u5358\u9805\u5f0f\u306e\u7acb\u65b9\u6839\u306f\u4e21\u65b9\u3068\u3082<\/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-1f61617ac46da6980b038f6068280293_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"8x^3\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"26\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u72ec\u7acb\u9805 1 \u304b\u3089\u306e\u5f0f\u306f\u6b63\u78ba\u3067\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-ff524d796280c6890e586ebb8a8023e2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\sqrt[3]{8x^3} = 2x\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"83\" style=\"vertical-align: -1px;\"><\/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-9f8402a5e8c6e7baa1ee3f973126c38f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\sqrt[3]{1} = 1\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"54\" style=\"vertical-align: -2px;\"><\/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-a4be4848c5fb1c048ff19989f177b944_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"8x^3+1 =(2x)^3+1^3\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"159\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u5b8c\u5168\u7acb\u65b9\u4f53\u306e\u548c\u306e\u516c\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u5f0f\u3092\u7c21\u7565\u5316\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-261e42482dc7545bb617e1d662dd2cc0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a^3+b^3  = (a+b)(a^2-ab+b^2)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"236\" 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-12bb382af2a96841b698c579bd102e82_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(2x)^3+1^3 = (2x+1)\\bigl((2x)^2-2x \\cdot 1 + 1^2\\bigr)\" title=\"Rendered by QuickLaTeX.com\" height=\"22\" width=\"320\" style=\"vertical-align: -7px;\"><\/p>\n<\/p>\n<p>\u6700\u5f8c\u306b\u3001\u7d50\u679c\u306e\u6f14\u7b97\u3092\u8a08\u7b97\u3059\u308b\u3060\u3051\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-7915cecea88607cdc34ea9c53e25654c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(2x)^3+1^3 = (2x+1)(4x^2-2x + 1\\bigr)\" title=\"Rendered by QuickLaTeX.com\" height=\"22\" width=\"276\" style=\"vertical-align: -7px;\"><\/p>\n<\/p>\n<p>\u7acb\u65b9\u4f53\u306e\u5408\u8a08\u3092\u6c42\u3081\u308b\u65b9\u6cd5\u3092\u78ba\u8a8d\u3057\u305f\u306e\u3067\u3001\u6b21\u306f<strong><span style=\"text-decoration: underline;\"><a href=\"https:\/\/mathority.org\/ja\/\u7acb\u65b9\u4f53\u306e\u5dee\u5f15\u304d\/\">\u7acb\u65b9\u4f53\u306e\u5dee\u3092<\/a><\/span><\/strong>\u56e0\u6570\u5206\u89e3\u3059\u308b\u65b9\u6cd5\u3092\u77e5\u308a\u305f\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u306a\u305c\u306a\u3089\u3001\u7acb\u65b9\u4f53\u306e\u5dee\u306e\u516c\u5f0f\u306f\u4f3c\u3066\u3044\u307e\u3059\u304c\u3001\u7acb\u65b9\u4f53\u306e\u548c\u3068\u5dee\u3092\u533a\u5225\u3067\u304d\u308b\u5c0f\u3055\u306a\u5909\u5316\u304c\u3042\u308b\u304b\u3089\u3067\u3059\u3002\u3053\u306e\u91cd\u8981\u306a\u5909\u66f4\u304c\u4f55\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u308b\u304b\u3001\u304a\u3088\u3073\u7acb\u65b9\u4f53\u306e\u6e1b\u7b97\u304c\u3069\u306e\u3088\u3046\u306b\u8a08\u7b97\u3055\u308c\u308b\u304b\u3092\u78ba\u8a8d\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u3053\u306e\u30ea\u30f3\u30af\u3092\u6b8b\u3057\u3066\u304a\u304d\u307e\u3059\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ejercicios-resueltos-de-sumas-de-cubos\"><\/span>\u7acb\u65b9\u4f53\u306e\u548c\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3057\u307e\u3057\u305f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 class=\"wp-block-heading\">\u6f14\u7fd2 1<\/h3>\n<p>\u6b21\u306e\u7acb\u65b9\u4f53\u306e\u52a0\u7b97\u3092\u6b21\u306e\u5f0f\u3067\u56e0\u6570\u5206\u89e3\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-64ab426c17c8571c1726998770c4b202_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x^6+27x^3\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"74\" style=\"vertical-align: -2px;\"><\/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\u53c2\u7167<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u591a\u9805\u5f0f\u306e 2 \u3064\u306e\u8981\u7d20\u306e\u7acb\u65b9\u6839\u306f\u6b63\u78ba\u3067\u3042\u308b\u305f\u3081\u3001\u3053\u306e\u5f0f\u306f\u7acb\u65b9\u4f53\u306e\u548c\u306b\u76f8\u5f53\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-4940d2f98a52cbec3af20836bd69d3b0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\sqrt[3]{x^6} = x^2\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"72\" style=\"vertical-align: -1px;\"><\/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-c60bf4d19507d04bdae93d067a8d693d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\sqrt[3]{27x^3} = 3x\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"92\" style=\"vertical-align: -1px;\"><\/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-1e8dbe7c909416a5a330d21440a3b89a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x^6+27x^3=\\bigl(x^2\\bigr)^3+(3x)^3\" title=\"Rendered by QuickLaTeX.com\" height=\"26\" width=\"202\" style=\"vertical-align: -7px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u3001\u5b8c\u5168\u7acb\u65b9\u4f53\u306e\u548c\u306e\u516c\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u3001\u4e09\u6b21\u5f0f\u3092\u4e8c\u9805\u5f0f\u3068\u4e09\u9805\u5f0f\u306e\u7a4d\u306b\u56e0\u6570\u5206\u89e3\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-261e42482dc7545bb617e1d662dd2cc0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a^3+b^3  = (a+b)(a^2-ab+b^2)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"236\" 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-26d11de6c65531d48077d92ffb61bfcb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\bigl(x^2\\bigr)^3+(3x)^3 = \\left(x^2+3x\\right)\\left( \\left(x^2\\right)^2-x^2 \\cdot 3x + (3x)^2\\right)\" title=\"Rendered by QuickLaTeX.com\" height=\"32\" width=\"397\" style=\"vertical-align: -11px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3053\u308c\u3092\u4f7f\u7528\u3057\u3066\u3059\u3079\u3066\u306e\u6f14\u7b97\u3092\u89e3\u6c7a\u3057\u3066\u3001\u56e0\u6570\u5206\u89e3\u3055\u308c\u305f\u591a\u9805\u5f0f\u3092\u898b\u3064\u3051\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-326b49aeb6e6835bd07aad5e4981b0f2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\bigl(x^2\\bigr)^3+(3x)^3 = \\left(x^2+3x\\right)\\left( x^4-3x^3 + 9x^2\\right)\" title=\"Rendered by QuickLaTeX.com\" height=\"26\" width=\"332\" style=\"vertical-align: -7px;\"><\/p>\n<\/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>\u5404\u7a4d\u3092\u7acb\u65b9\u4f53\u306e\u5408\u8a08\u3068\u3057\u3066\u8868\u73fe\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-52faab57ad4a1ac55f7bfef5b1b8f45c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{A)} \\ (x+5)(x^2-5x+25)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"192\" 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-d8ffa443eb8d1c0e020249e47f8b0d3a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{B)} \\ (2x+7)(4x^2-14x+49)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"217\" 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-80cc39921b76e54197953588ddf19544_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{C)} \\ (8x+y^2)(64x^2-8xy^2+y^4)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"242\" 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\u53c2\u7167<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">3 \u3064\u306e\u6f14\u7fd2\u306e\u5f0f\u306f\u7acb\u65b9\u4f53\u306e\u548c\u306e\u516c\u5f0f\u3092\u5c0a\u91cd\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u591a\u9805\u5f0f\u306e\u4e57\u7b97\u3092\u89e3\u304f\u3060\u3051\u3067\u5341\u5206\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-db8da16c852b5b0b6c5b713c0d2d4fcf_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{A)} \\ \\begin{array}{l}(x+5)(x^2-5x+25) = \\\\[2ex] = x^3-5x^2+25x+5x^2-25x+125 = \\\\[2ex] = x^3 +125\\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"92\" width=\"339\" 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-73ca58a006b5e2fd30f9e2bc1fe170f3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{B)} \\ \\begin{array}{l}(2x+7)(4x^2-14x+49) = \\\\[2ex] =  8x^3-28x^2+98x+28x^2-98x+343 = \\\\[2ex]  = 8x^3+343\\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"92\" width=\"364\" 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-fcad6960f7a6c30cc8f251d33ed98a5e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{C)} \\ \\begin{array}{l}(8x+y^2)(64x^2-8xy^2+y^4) = \\\\[2ex] =512x^3-64x^2y^2+8xy^4+64x^2y^2-8xy^4+y^6= \\\\[2ex] = 512x^3+y^6\\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"94\" width=\"423\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<p>\u6ce8\u76ee\u306b\u5024\u3059\u308b\u30a2\u30a4\u30c7\u30f3\u30c6\u30a3\u30c6\u30a3\u306b\u8208\u5473\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u591a\u304f\u306e\u4eba\u304c\u5fd8\u308c\u3066\u3044\u308b (\u305d\u3057\u3066\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b) \u30a2\u30a4\u30c7\u30f3\u30c6\u30a3\u30c6\u30a3\u304c\u3042\u308b\u3053\u3068\u3092\u77e5\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u305f\u3060\u3057\u3001 <strong><span style=\"text-decoration: underline;\"><a href=\"https:\/\/mathority.org\/ja\/\u4e09\u9805\u4e8c\u4e57\/\">\u4e09\u9805\u4e8c\u4e57<\/a><\/span><\/strong>\u3068\u547c\u3070\u308c\u308b\u3001\u3053\u306e\u6ce8\u76ee\u3059\u3079\u304d\u6052\u7b49\u5f0f\u306e\u516c\u5f0f\u3092\u899a\u3048\u3066\u304a\u304f\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u3053\u306e\u30ea\u30f3\u30af\u304c\u4f55\u3067\u3042\u308b\u304b\u3001\u305d\u3057\u3066\u3053\u306e\u516c\u5f0f\u304c\u3069\u306e\u3088\u3046\u306b\u9069\u7528\u3055\u308c\u308b\u304b\u3092\u78ba\u8a8d\u3067\u304d\u308b\u30ea\u30f3\u30af\u3092\u6b8b\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\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\u7acb\u65b9\u4f53\u306e\u5408\u8a08\u306e\u516c\u5f0f\u3068\u3001\u7acb\u65b9\u4f53\u306e\u5408\u8a08\u304c\u3069\u306e\u3088\u3046\u306b\u56e0\u6570\u5206\u89e3\u3055\u308c\u308b\u304b\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u7acb\u65b9\u4f53\u306e\u548c\u306b\u95a2\u3059\u308b\u3044\u304f\u3064\u304b\u306e\u4f8b\u3068\u89e3\u7b54\u6e08\u307f\u306e\u6f14\u7fd2\u3092\u898b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u7acb\u65b9\u4f53\u306e\u5408\u8a08\u306f\u3044\u304f\u3089\u3067\u3059\u304b? \u7acb\u65b9\u4f53\u306e\u548c\u306f\u4e8c &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathority.org\/ja\/%e7%ab%8b%e6%96%b9%e4%bd%93%e3%81%ae%e5%92%8c\/\"> <span class=\"screen-reader-text\">\u7acb\u65b9\u4f53\u306e\u548c<\/span> \u3082\u3063\u3068\u8aad\u3080 &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","footnotes":""},"categories":[10],"tags":[],"class_list":["post-338","post","type-post","status-publish","format-standard","hentry","category-10"],"yoast_head":"<!-- This site is optimized 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