{"id":53,"date":"2023-09-17T07:27:21","date_gmt":"2023-09-17T07:27:21","guid":{"rendered":"https:\/\/mathority.org\/pt\/multiplicacao-de-polinomios-exemplos-exercicios-produto-resolvido-multiplicacao\/"},"modified":"2023-09-17T07:27:21","modified_gmt":"2023-09-17T07:27:21","slug":"multiplicacao-de-polinomios-exemplos-exercicios-produto-resolvido-multiplicacao","status":"publish","type":"post","link":"https:\/\/mathority.org\/pt\/multiplicacao-de-polinomios-exemplos-exercicios-produto-resolvido-multiplicacao\/","title":{"rendered":"Multiplica\u00e7\u00e3o (ou produto) de polin\u00f4mios"},"content":{"rendered":"<p>Nesta p\u00e1gina voc\u00ea aprender\u00e1 como os polin\u00f4mios s\u00e3o multiplicados. Voc\u00ea tamb\u00e9m poder\u00e1 ver exemplos de multiplica\u00e7\u00e3o de polin\u00f4mios e, al\u00e9m disso, exerc\u00edcios resolvidos passo a passo. Finalmente, voc\u00ea descobrir\u00e1 quais s\u00e3o as propriedades da multiplica\u00e7\u00e3o de polin\u00f4mios. <\/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\/comment-multiplier-2-polynomes.png\" alt=\"como multiplicar polin\u00f4mios\" class=\"wp-image-586\" width=\"216\" height=\"217\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Por\u00e9m, para entender completamente o conceito de multiplica\u00e7\u00e3o de polin\u00f4mios, passaremos do mais b\u00e1sico ao mais complicado, ou seja, come\u00e7aremos explicando como multiplicar um polin\u00f4mio por um n\u00famero, e depois veremos como multiplicar um polin\u00f4mio por um mon\u00f4mio e, por fim, explicaremos como multiplicar dois ou mais polin\u00f4mios entre si.<\/p>\n<p> Aconselho voc\u00ea a seguir esta ordem, mas se voc\u00ea acha que j\u00e1 domina as opera\u00e7\u00f5es com os polin\u00f4mios anteriores pode ir diretamente para a multiplica\u00e7\u00e3o entre polin\u00f4mios clicando no \u00edndice: <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Multiplicacion-de-un-polinomio-por-un-numero\"><\/span> Multiplique um polin\u00f4mio por um n\u00famero<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> O produto de um escalar (ou n\u00famero) e um polin\u00f4mio \u00e9 bastante simples de resolver, basta <strong>multiplicar o n\u00famero pelo coeficiente de cada termo do polin\u00f4mio<\/strong> . <\/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\/nombre-de-multiplication-par-polynome.jpg\" alt=\"multiplica\u00e7\u00e3o de um n\u00famero por um polin\u00f4mio\" class=\"wp-image-593\" width=\"305\" height=\"150\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> O sinal de multiplica\u00e7\u00e3o antes dos par\u00eanteses pode ser omitido. <\/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-794a3972ecb155b810fc6833caa7d1a1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{l} 2\\cdot (5x^4-6x^2) =  \\\\[2ex] =2 (5x^4-6x^2)= \\\\[2ex] = 10x^4-12x^2 \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"90\" width=\"134\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Multiplicacion-de-un-polinomio-por-un-monomio\"><\/span> Multiplicando um polin\u00f4mio por um mon\u00f4mio<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Antes de ver como multiplicar um polin\u00f4mio por um mon\u00f4mio, vamos primeiro lembrar como os mon\u00f4mios se multiplicam, pois voc\u00ea precisa saber disso para poder fazer esse tipo de opera\u00e7\u00e3o polinomial.<\/p>\n<p> O produto de dois mon\u00f4mios consiste em multiplicar seus coeficientes entre si e suas partes literais entre si, ou seja, multiplicam-se os coeficientes dos mon\u00f4mios e somam-se os expoentes das vari\u00e1veis que possuem a mesma base. Veja o exemplo a seguir:<\/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-1a80e193c5d8ecc70d1435dbd2ebea1d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"3x^2 \\cdot 4x^5 = (3\\cdot 4) x^{2+5} = 12x^7\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"228\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Agora vamos ver como multiplicar um mon\u00f4mio por um polin\u00f4mio:<\/p>\n<p class=\"has-background\" style=\"background-color:#ffebee\"> Em matem\u00e1tica, para resolver a <strong>multiplica\u00e7\u00e3o de um mon\u00f4mio por um polin\u00f4mio,<\/strong> o mon\u00f4mio \u00e9 multiplicado por cada termo do polin\u00f4mio. <\/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\/multiplication-d-un-polynome-par-un-monome.jpg\" alt=\"multiplica\u00e7\u00e3o de um polin\u00f4mio por um mon\u00f4mio\" class=\"wp-image-601\" width=\"407\" height=\"220\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Como antes, o sinal de multiplica\u00e7\u00e3o tamb\u00e9m pode ser omitido:<\/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-f3c8bf0b635315032c46506aee223e29_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{l} -4x \\cdot (2x^3-5x^2)= \\\\[2ex] =-4x (2x^3-5x^2)=\\\\[2ex] = -4x\\cdot 2x^3 -4x \\cdot (-5x^2) = \\\\[2ex] =-8x^4 +20x^3 \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"129\" width=\"217\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> Observe no exemplo anterior que ao multiplicar mon\u00f4mios ou polin\u00f4mios voc\u00ea tamb\u00e9m deve levar em considera\u00e7\u00e3o a regra dos sinais. Na verdade, um erro muito comum ao multiplicar mon\u00f4mios e polin\u00f4mios \u00e9 errar o sinal de um termo.<\/p>\n<p> Certamente em algum momento, ao ver algo novo na matem\u00e1tica, voc\u00ea se perguntou: <span style=\"text-decoration: underline;\">para que serve<\/span> ? Pois bem, este tipo de multiplica\u00e7\u00e3o \u00e9 utilizado para obter <strong><span style=\"text-decoration: underline;\"><a href=\"https:\/\/mathority.org\/pt\/extrair-extrair-exercicios-exemplos-resolvidos-de-fator-comum\/\">o fator comum de um polin\u00f4mio<\/a><\/span><\/strong> , opera\u00e7\u00e3o que permite simplificar polin\u00f4mios (muito \u00fatil). Voc\u00ea pode ver o que \u00e9 e como o fator comum de um polin\u00f4mio \u00e9 calculado neste link.<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Multiplicacion-de-dos-polinomios\"><\/span> Multiplica\u00e7\u00e3o de dois polin\u00f4mios<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Depois de sabermos como multiplicar polin\u00f4mios por n\u00fameros e por mon\u00f4mios, vamos ver o que \u00e9 e como multiplicar polin\u00f4mios por polin\u00f4mios. <\/p>\n<div style=\"background-color:#ffebee;padding-top: 20px; padding-bottom: 0.5px; padding-right: 30px; padding-left: 30px;  border-radius:20px;\">\n<p style=\"text-align:left; margin-bottom:15px;\"> Para <strong>multiplicar polin\u00f4mios,<\/strong> siga estas etapas:<\/p>\n<ol style=\"font-weight: bold;\">\n<li style=\"margin-bottom:8px;\"> <span style=\"font-weight: normal;\">Multiplique cada termo do primeiro polin\u00f4mio por todos os termos do segundo polin\u00f4mio.<\/span><\/li>\n<li> <span style=\"font-weight: normal;\">Adicione (ou subtraia) mon\u00f4mios do mesmo grau (mon\u00f4mios semelhantes).<\/span><\/li>\n<\/ol>\n<\/div>\n<p> Para que voc\u00ea possa ver exatamente o que \u00e9 esse m\u00e9todo, resolveremos passo a passo a seguinte multiplica\u00e7\u00e3o de polin\u00f4mios: <\/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\/exemples-de-multiplication-de-polynomes.jpg\" alt=\"exemplos de multiplica\u00e7\u00e3o de polin\u00f4mios\" class=\"wp-image-618\" width=\"326\" height=\"47\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Em primeiro lugar, devemos multiplicar cada elemento do primeiro polin\u00f4mio multiplicador por cada termo do segundo polin\u00f4mio: <\/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\/multiplication-de-polynomes.jpg\" alt=\"multiplica\u00e7\u00e3o de polin\u00f4mios\" class=\"wp-image-619\" width=\"333\" height=\"224\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\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\/multiplication-de-polynomes-pas-a-pas.jpg\" alt=\"multiplica\u00e7\u00e3o de polin\u00f4mios passo a passo\" class=\"wp-image-620\" width=\"399\" height=\"90\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Agora fazemos todas as multiplica\u00e7\u00f5es de mon\u00f4mios: <\/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\/produit-de-deux-polynomes.jpg\" alt=\"produto de dois polin\u00f4mios\" class=\"wp-image-3014\" width=\"436\" height=\"50\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Depois de multiplicarmos os polin\u00f4mios, basta agrupar os termos resultantes que s\u00e3o semelhantes, ou seja, os termos que t\u00eam a mesma letra e o mesmo expoente: <\/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\/multiplication-de-polynomes-par-polynomes-deux.jpg\" alt=\"multiplica\u00e7\u00e3o de polin\u00f4mios por polin\u00f4mios\" class=\"wp-image-684\" width=\"436\" height=\"116\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> O resultado da multiplica\u00e7\u00e3o polinomial \u00e9, portanto: <\/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\/resultat-multiplication-de-polynomes.jpg\" alt=\"resultado da multiplica\u00e7\u00e3o polinomial\" class=\"wp-image-685\" width=\"288\" height=\"47\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> E desta forma j\u00e1 calculamos a multiplica\u00e7\u00e3o de polin\u00f4mios. Talvez pare\u00e7a muito dif\u00edcil para voc\u00ea agora, mas voc\u00ea ver\u00e1 que ao praticar com dois ou tr\u00eas exerc\u00edcios ser\u00e1 muito mais f\u00e1cil.<\/p>\n<p> Agora que voc\u00ea viu como se resolve a multiplica\u00e7\u00e3o entre dois polin\u00f4mios, provavelmente est\u00e1 interessado em saber <strong><span style=\"text-decoration: underline;\"><a href=\"https:\/\/mathority.org\/pt\/divisao-de-polinomios-exemplos-exercicios-resolvidos-dividir\/\">como dividir polin\u00f4mios<\/a><\/span><\/strong> . Na verdade, dividir polin\u00f4mios \u00e9 muito mais complicado do que multiplic\u00e1-los, por isso explicamos o procedimento (e dicas\ud83d\ude09) passo a passo para que voc\u00ea possa entend\u00ea-lo completamente. Se voc\u00ea estiver interessado, clique neste link para ver como os polin\u00f4mios s\u00e3o divididos. <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Multiplicacion-de-polinomios-vertical\"><\/span> Multiplica\u00e7\u00e3o polinomial vertical<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Acabamos de ver como multiplicar um polin\u00f4mio por outro polin\u00f4mio horizontalmente, mas isso tamb\u00e9m pode ser feito de uma forma mais cl\u00e1ssica: multiplicar polin\u00f4mios verticalmente. Vamos ver como esse m\u00e9todo \u00e9 usado resolvendo um exemplo de multiplica\u00e7\u00e3o polinomial.<\/p>\n<p> Se quisermos multiplicar verticalmente os dois polin\u00f4mios a seguir:<\/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-e5478df383296dfba5baa18b100c8f81_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(5x^2+3x-4) \\cdot (2x^2-x)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"195\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> A primeira coisa que precisamos fazer \u00e9 colocar um polin\u00f4mio abaixo do outro, como uma multiplica\u00e7\u00e3o alg\u00e9brica de polin\u00f4mios: <\/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\/multiplication-de-polynomes-en-ligne.jpg\" alt=\"multiplica\u00e7\u00e3o de polin\u00f4mios on-line\" class=\"wp-image-638\" width=\"259\" height=\"71\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Segundo, multiplicamos cada termo do polin\u00f4mio abaixo por cada termo do polin\u00f4mio acima e colocamos os resultados ordenados por colunas do grau mais alto ao grau mais baixo: <\/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\/operations-avec-polynomes-2.jpg\" alt=\"opera\u00e7\u00f5es com polin\u00f4mios\" class=\"wp-image-641\" width=\"259\" height=\"149\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> E por fim, adicionamos os termos alinhados verticalmente: <\/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\/multiplication-de-polynomes-verticaux-2.jpg\" alt=\"multiplica\u00e7\u00e3o polinomial vertical\" class=\"wp-image-645\" width=\"303\" height=\"193\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<p> Agora que voc\u00ea viu os 2 m\u00e9todos que existem para resolver uma multiplica\u00e7\u00e3o de polin\u00f4mios, <span style=\"text-decoration: underline;\">voc\u00ea sabia que tamb\u00e9m pode multiplicar fra\u00e7\u00f5es por polin\u00f4mios<\/span> ? E n\u00e3o apenas multiplica\u00e7\u00f5es, mas todos os tipos de opera\u00e7\u00f5es podem ser realizadas com esses tipos de fra\u00e7\u00f5es. Clique neste link e descubra o que s\u00e3o <strong><a href=\"https:\/\/mathority.org\/pt\/fracoes-algebricas-operacoes-simplificadas-adicao-subtracao-multiplicacao-divisao-exercicios-resolvidos\/\"><span style=\"text-decoration: underline;\">fra\u00e7\u00f5es alg\u00e9bricas<\/span><\/a><\/strong> . <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Propiedades-de-la-multiplicacion-de-polinomios\"><\/span> Propriedades da multiplica\u00e7\u00e3o polinomial<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> A multiplica\u00e7\u00e3o de polin\u00f4mios possui as seguintes caracter\u00edsticas:<\/p>\n<ul>\n<li> <strong>Propriedade comutativa<\/strong> : a ordem dos polin\u00f4mios multiplicadores n\u00e3o modifica o resultado da multiplica\u00e7\u00e3o.<\/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-c665d7a99e0bd16f64cea1b0e4cf64b6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(x)\\cdot Q(x) = Q(x) \\cdot P(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"200\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<ul>\n<li> <strong>Propriedade associativa<\/strong> : Quando tr\u00eas ou mais polin\u00f4mios s\u00e3o multiplicados, o resultado do produto \u00e9 o mesmo independente de como os fatores est\u00e3o agrupados:<\/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-52bdfe9c0c3f2ad39f0d4c39d492f84f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\bigl(P(x) \\cdot Q(x)\\bigr) \\cdot R(x) =P(x) \\cdot \\bigl(Q(x) \\cdot R(x)\\bigr)\" title=\"Rendered by QuickLaTeX.com\" height=\"22\" width=\"330\" style=\"vertical-align: -7px;\"><\/p>\n<\/p>\n<ul>\n<li> <strong>Propriedade distributiva<\/strong> : a soma de dois polin\u00f4mios multiplicada por um ter\u00e7o \u00e9 igual \u00e0 soma de cada adi\u00e7\u00e3o multiplicada pelo terceiro polin\u00f4mio.<\/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-f71d8843b4fe23db9bb5d4211e5c666b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P(x)\\cdot \\bigl(Q(x)+ R(x)\\bigr) = P(x)\\cdot Q(x) + P(x) \\cdot R(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"22\" width=\"385\" style=\"vertical-align: -7px;\"><\/p>\n<\/p>\n<ul>\n<li> O <strong>grau do polin\u00f4mio<\/strong> resultante de uma multiplica\u00e7\u00e3o entre dois polin\u00f4mios \u00e9 igual \u00e0 soma dos graus dos dois polin\u00f4mios multiplicados. <\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ejercicios-resueltos-de-multiplicaciones-de-polinomios\"><\/span> Exerc\u00edcios resolvidos sobre multiplica\u00e7\u00e3o de polin\u00f4mios<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Para que voc\u00eas possam praticar, deixo-vos com v\u00e1rios exerc\u00edcios resolvidos sobre multiplica\u00e7\u00e3o de polin\u00f4mios. Voc\u00ea pode tentar resolv\u00ea-los sozinho e verificar seus resultados com a solu\u00e7\u00e3o proposta. Voc\u00ea pode ent\u00e3o nos fazer todas as suas perguntas nos coment\u00e1rios, teremos o maior prazer em ajud\u00e1-lo.<\/p>\n<h3 class=\"wp-block-heading\"> Exerc\u00edcio 1<\/h3>\n<p> Calcule os seguintes produtos entre polin\u00f4mios e escalares: <\/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-0f92bb2fcd1e07268914dabfd501f2c9_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{A)} \\ 4\\cdot (2x^3-4x)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"128\" 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-e60e195551af280adac6e4702910db91_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{B)} \\ -3 \\cdot (-5x^2+9x)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"163\" 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-d268a16fd753852a5a84c74273f29fef_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{C)} \\ 5\\cdot(3x^2+4x-7)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"158\" 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-38aa478170ace73944926daa05e12542_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{D)} \\ -6\\cdot(4x^5-6x^3+8x^2-7)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"237\" 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>Veja a solu\u00e7\u00e3o<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> Para calcular a multiplica\u00e7\u00e3o de um polin\u00f4mio por um n\u00famero, deve-se multiplicar o n\u00famero pelo coeficiente de cada elemento do polin\u00f4mio. ENT\u00c3O: <\/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-b6d1103f19b04ce291474f9132a99591_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{A)} \\ 4\\cdot (2x^3-4x) =4 \\cdot 2x^3 -4\\cdot 4x = \\bm{8x^3-16x}\" 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-2b7bbf5ca26a7268c5d0bd8e2562b626_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{B)} \\ -3 \\cdot (-5x^2+9x) = -3 \\cdot (-5x^2)-3\\cdot 9x = \\bm{15x^2-27x}\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"448\" 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-20ae447b3f91baaa2df40e25daa0c903_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{C)} \\ 5\\cdot(3x^2+4x-7) = \\bm{15x^2+20x-35}\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"306\" 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-42b8fc68ebd70896b62f90ace9face1b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{D)} \\ -6\\cdot(4x^5-6x^3+8x^2-7) = \\bm{-24x^5+36x^3-48x^2+42}\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"463\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">Exerc\u00edcio 2<\/h3>\n<p> Resolva as seguintes multiplica\u00e7\u00f5es entre polin\u00f4mios e mon\u00f4mios: <\/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-df50faa770714f4103aa8dc60e152141_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{A)} \\ 2x \\cdot (5x^2+3)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"128\" 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-762c5f0cf37df0a8c369ee984a31af27_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{B)} \\ -4x^2 \\cdot (6x^4-9x^2)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"174\" 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-d5f1f0d9cbc6c9e1681a3ff5388c912b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{C)} \\ -5x^3\\cdot (-2x^3+2x^2-5)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"219\" 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-824570c27cee0bc747658a3787656c77_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{D)} \\ 3x^2\\cdot(7x^6-4x^5-x^3-3x)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"234\" 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>Veja a solu\u00e7\u00e3o<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> Para resolver a multiplica\u00e7\u00e3o de um polin\u00f4mio por um mon\u00f4mio, voc\u00ea deve multiplicar o referido mon\u00f4mio por cada termo do polin\u00f4mio. ENT\u00c3O: <\/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-daea6b99a13b2ffe30a29038625c0a02_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{A)} \\ 2x \\cdot (5x^2+3) = 2x \\cdot 5x^2+2x\\cdot 3 = \\bm{10x^3+6x}\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"373\" 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-c103ea01b567a19443fb7838f496c221_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{B)} \\ -4x^2 \\cdot (6x^4-9x^2)= -4x^2 \\cdot 6x^4 - 4x^2 \\cdot (-9x^2) = \\bm{-24x^6+36x^4}\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"524\" 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-a0139e2d94ec7f2a5cc7977b98dd5fee_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{C)} \\ -5x^3\\cdot (-2x^3+2x^2-5) = \\bm{10x^6-10x^5+25x^3}\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"393\" 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-33e8cdad53a820136961a772110b145a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{D)} \\ 3x^2\\cdot(7x^6-4x^5-x^3-3x) = \\bm{21x^8-12x^7-3x^5-9x^3}\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"447\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">Exerc\u00edcio 3<\/h3>\n<p> Determine o resultado das seguintes multiplica\u00e7\u00f5es entre polin\u00f4mios: <\/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-c07caa45f98a46549dc6a287e17ef7de_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{A)} \\ (4x^2 + 1) \\cdot (3x^2-2)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"180\" 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-9aa3b703bd962c40a809d7ab39cbcf71_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{B)} \\ (-3x^4+2x) \\cdot (5x^4-x)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"204\" 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-bc728e8353b0d812f089519ae3f5d0b2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{C)} \\ (2x^3-5x^2)\\cdot (4x-7)\" 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>Veja a solu\u00e7\u00e3o<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> Para calcular uma multiplica\u00e7\u00e3o de dois polin\u00f4mios, precisamos multiplicar cada elemento do primeiro polin\u00f4mio por cada elemento do segundo polin\u00f4mio e depois agrupar termos semelhantes. ENT\u00c3O: <\/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-51dbb4634996039c3b67ce506aef648c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\color{blue} \\mathbf{A}\\bm{)} \\color{black} \\ \\begin{array}{l} (4x^2 + 1) \\cdot (3x^2-2) = \\\\[2ex] =4x^2 \\cdot 3x^2 +4x^2\\cdot (-2) +1 \\cdot 3x^2 +1 \\cdot (-2) = \\\\[2ex] = 12x^4-8x^2+3x^2 -2 = \\\\[2ex] = \\bm{12x^4-5x^2-2} \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"127\" width=\"475\" 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-fba45efd14a187f0eaa210f0561c68a4_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\color{blue} \\mathbf{B}\\bm{)} \\color{black} \\ \\begin{array}{l} (-3x^4+2x) \\cdot (5x^4-x) = \\\\[2ex] =-3x^4\\cdot 5x^4 -3x^4\\cdot (-x) +2x \\cdot 5x^4 +2x \\cdot (-x) = \\\\[2ex] = -15x^8+3x^5+10x^5-2x^2 = \\\\[2ex] = \\bm{-15x^8+13x^5-2x^2} \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"129\" width=\"511\" 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-32417206d212f4b5ee2a6fb53aa77f30_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\color{blue} \\mathbf{C}\\bm{)} \\color{black} \\ \\begin{array}{l} (2x^3-5x^2)\\cdot (4x-7) = \\\\[2ex] =2x^3\\cdot 4x +2x^3\\cdot (-7) -5x^2 \\cdot 4x -5x^2\\cdot (-7) = \\\\[2ex] = 8x^4-14x^3-20x^3+35x^2 = \\\\[2ex] = \\bm{8x^4-34x^3+35x^2} \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"129\" width=\"495\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">Exerc\u00edcio 4<\/h3>\n<p> Encontre o resultado das seguintes multiplica\u00e7\u00f5es entre polin\u00f4mios: <\/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-0188425573536d87f56b088fd732e7ad_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{A)} \\ (4x^2-6x+2) \\cdot (5x^3-x^2)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"230\" 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-79ee0e2306fd0c362a95195b5ae595f4_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{B)} \\ (3x^3-2x+7) \\cdot (-4x^3+5x)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"244\" 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-fbda9c61d3de18e430577d8e551f8717_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{C)} \\ (9x^4-4x^3+x^2)\\cdot (2x^5-4x^4-5x^3)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"303\" 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>Veja a solu\u00e7\u00e3o<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> Para calcular uma multiplica\u00e7\u00e3o de dois polin\u00f4mios, precisamos multiplicar cada elemento do primeiro polin\u00f4mio por cada elemento do segundo polin\u00f4mio e, em seguida, adicionar os termos semelhantes. ENT\u00c3O: <\/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-ba837feab91328dd1ac60093307a3691_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\color{blue} \\mathbf{A}\\bm{)} \\color{black} \\ \\begin{array}{l} (4x^2-6x+2) \\cdot (5x^3-x^2) = \\\\[2ex] =4x^2 \\cdot 5x^3 +4x^2\\cdot (-x^2) -6x \\cdot 5x^3 -6x \\cdot (-x^2) + 2 \\cdot 5x^3 +2 \\cdot (-x^2) = \\\\[2ex] = 20x^5-4x^4-30x^4+6x^3+10x^3-2x^2 = \\\\[2ex] = \\bm{20x^5-34x^4+16x^3-2x^2} \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"129\" width=\"664\" 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-486aedf31fca13fd2b4af2c72a3b34a1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\color{blue} \\mathbf{B}\\bm{)} \\color{black} \\ \\begin{array}{l} (3x^3-2x+7) \\cdot (-4x^3+5x) = \\\\[2ex] =3x^3 \\cdot (-4x^3) +3x^3\\cdot 5x -2x \\cdot (-4x^3) -2x \\cdot 5x + 7 \\cdot (-4x^3) +7 \\cdot 5x = \\\\[2ex] =-12x^6+15x^4+8x^4-10x^2-28x^3+35x = \\\\[2ex] = \\bm{-12x^6+23x^4-28x^3-10x^2+35x} \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"129\" width=\"667\" 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-81d28b9e6595a4e28d09d46bab74c467_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\color{blue} \\mathbf{C}\\bm{)} \\color{black} \\ \\begin{array}{l} (9x^4-4x^3+x^2)\\cdot (2x^5-4x^4-5x^3) =  \\\\[2ex] = 18x^9-36x^8-45x^7-8x^8+16x^7+20x^6+2x^7-4x^6-5x^5 = \\\\[2ex] = \\bm{18x^9-44x^8-27x^7+16x^6-5x^5} \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"92\" width=\"611\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">Exerc\u00edcio 5<\/h3>\n<p> Calcule as seguintes multiplica\u00e7\u00f5es de polin\u00f4mios: <\/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-41814d65cc135f30a9afb3bc966962fb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{A)} \\ (2x^4+3x^3-6x^2+5x-1) \\cdot (4x^2-6x)\" 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-f234c4e22285b278743a244145b5d551_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{B)} \\  (x^2-4x+7) \\cdot (-x^3-5x^2+2x+9)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"305\" 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-752db4ceb3d2eb78444b8551b9068510_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{C)} \\ (2x^7+6x^5+3x^4-5x^2)\\cdot (4x^6-8x^3-x^2+8)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"382\" 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>Veja a solu\u00e7\u00e3o<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> Para fazer um produto de 2 polin\u00f4mios, voc\u00ea deve multiplicar cada termo do primeiro polin\u00f4mio por cada termo do segundo polin\u00f4mio e depois agrupar os mon\u00f4mios semelhantes obtidos. Ainda: <\/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-d6d4bb6d12ab30b22cbb7cffc071093c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\color{blue} \\mathbf{A}\\bm{)} \\color{black} \\ \\begin{array}{l}(2x^4+3x^3-6x^2+5x-1) \\cdot (4x^2-6x)=  \\\\[2ex] = 8x^6-12x^5+12x^5-18x^4-24x^4+36x^3+20x^3-30x^2-4x^2+6x  = \\\\[2ex] = \\bm{8x^6-42x^4+56x^3-34x^2+6x} \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"92\" width=\"670\" 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-efacae5cc2c79ff47d4bca96ab082eb7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\color{blue} \\mathbf{B}\\bm{)} \\color{black} \\ \\begin{array}{l} (x^2-4x+7) \\cdot (-x^3-5x^2+2x+9)= \\\\[2ex] =-x^5-5x^4+2x^3+9x^2+4x^4+20x^3-8x^2-36x-7x^3-35x^2+14x+63 = \\\\[2ex] = \\bm{-x^5-x^4+15x^3-34x^2-22x+63} \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"92\" width=\"727\" 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-2b27ccbbd6344d296250e7dc9f3fbbbf_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\color{blue} \\mathbf{C}\\bm{)} \\color{black} \\ \\begin{array}{l} (2x^7+6x^5+3x^4-5x^2)\\cdot (4x^6-8x^3-x^2+8) =  \\\\[2ex] = 8x^{13}-16x^{10}-2x^9+16x^7+24x^{11}-48x^8-6x^7+48x^5+ \\\\[2ex] + \\ 12x^{10}-24x^7-3x^6+24x^4-20x^8+40x^5+5x^4-40x^2  = \\\\[2ex] = \\bm{8x^{13}+24x^{11}-4x^{10}-2x^9-68x^8-14x^7-3x^6+} \\\\[2ex] \\bm{+ \\ 88x^5+29x^4-40x^2} \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"166\" width=\"579\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">Exerc\u00edcio 6<\/h3>\n<p> Resolva a seguinte multiplica\u00e7\u00e3o de 3 polin\u00f4mios: <\/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-3744967e658727129d7b2bc4b4b61ce1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(2x^2-3) \\cdot (-5x^4+3x^2-6) \\cdot (9x^3-6x)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"309\" 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>Veja a solu\u00e7\u00e3o<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> O funcionamento do problema consiste em 2 multiplica\u00e7\u00f5es de polin\u00f4mios, mais precisamente \u00e9 composto por dois bin\u00f4mios e um trin\u00f4mio. Portanto, precisamos primeiro resolver um produto e depois multiplicar o resultado pelo polin\u00f4mio restante.<\/p>\n<p class=\"has-text-align-left\"> Portanto, calculamos a primeira multiplica\u00e7\u00e3o:<\/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-c9860e611d9fee24111ec42d5451366f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{l} (2x^2-3) \\cdot (-5x^4+3x^2-6) \\cdot (9x^3-6x) = \\\\[2ex] = \\bigl[-10x^6+6x^4-12x^2+15x^4-9x^2+18 \\bigr]\\cdot (9x^3-6x) = \\\\[2ex] = (-10x^6+21x^4-21x^2+18)\\cdot (9x^3-6x)\\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"95\" width=\"445\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> E agora resolvemos a multiplica\u00e7\u00e3o restante: <\/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-a4280995c52ffc8cd833b76b72584c96_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{l} (-10x^6+21x^4-21x^2+18)\\cdot (9x^3-6x)= \\\\[2ex] = -90x^9+60x^7+189x^7-126x^5-189x^5+126x^3+162x^3-108x \\\\[2ex] =\\bm{-90x^9+249x^7-315x^5+288x^3-108x} \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"92\" width=\"514\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">Exerc\u00edcio 7<\/h3>\n<p> Multiplique os seguintes polin\u00f4mios por coeficientes racionais (com fra\u00e7\u00f5es): <\/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-11d24f04770e3eddbb35c4330f593994_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\left( \\frac{1}{3}x^2- 4x \\right) \\cdot  \\left( 5x- \\frac{2}{7} \\right)\" title=\"Rendered by QuickLaTeX.com\" height=\"43\" width=\"184\" style=\"vertical-align: -17px;\"><\/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>Veja a solu\u00e7\u00e3o<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> Embora os polin\u00f4mios tenham fra\u00e7\u00f5es, ainda \u00e9 uma multiplica\u00e7\u00e3o entre dois polin\u00f4mios. Deve, portanto, ser resolvido como qualquer produto polinomial: multiplique todos os elementos e agrupe mon\u00f4mios semelhantes.<\/p>\n<p class=\"has-text-align-left\"> Portanto, multiplicamos os polin\u00f4mios:<\/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-6e144cee08d9d9a02af24c2338c5d37c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{array}{l} \\displaystyle\\left( \\frac{1}{3}x^2- 4x \\right) \\cdot \\left( 5x- \\frac{2}{7} \\right) = \\\\[4ex] = \\displaystyle\\frac{1}{3}x^2 \\cdot 5x +\\frac{1}{3}x^2\\cdot \\left(- \\frac{2}{7} \\right) -4x \\cdot 5x - 4x \\cdot \\left(- \\frac{2}{7} \\right)  = \\\\[4ex] =\\displaystyle \\frac{5}{3}x^3 -\\frac{2}{21}x^2 -20x^2+\\frac{8}{7} x\\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"161\" width=\"395\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> E, por fim, somamos (ou subtra\u00edmos) os termos cujas partes literais s\u00e3o id\u00eanticas:<\/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-54b9cfbdee75b2c0d95499f25b6547ec_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{l}\\displaystyle \\frac{5}{3}x^3 -\\frac{2}{21}x^2 -20x^2+\\frac{8}{7} x= \\\\[4ex] \\displaystyle= \\frac{5}{3}x^3 -\\frac{2}{21}x^2 -\\frac{420}{21}x^2+\\frac{8}{7} x \\\\[4ex] \\displaystyle=\\mathbf{\\frac{5}{3}}\\bm{x^3} -\\mathbf{\\frac{422}{20}}\\bm{x^2}+\\mathbf{\\frac{8}{7}} \\bm{x} \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"159\" width=\"225\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> Para concluir este exerc\u00edcio com \u00eaxito, era importante que voc\u00ea dominasse as opera\u00e7\u00f5es com fra\u00e7\u00f5es. Mas se voc\u00ea tiver alguma d\u00favida sobre alguma etapa, pode perguntar nos coment\u00e1rios e n\u00f3s responderemos o mais r\u00e1pido poss\u00edvel. <\/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>Nesta p\u00e1gina voc\u00ea aprender\u00e1 como os polin\u00f4mios s\u00e3o multiplicados. Voc\u00ea tamb\u00e9m poder\u00e1 ver exemplos de multiplica\u00e7\u00e3o de polin\u00f4mios e, al\u00e9m disso, exerc\u00edcios resolvidos passo a passo. Finalmente, voc\u00ea descobrir\u00e1 quais s\u00e3o as propriedades da multiplica\u00e7\u00e3o de polin\u00f4mios. Por\u00e9m, para entender completamente o conceito de multiplica\u00e7\u00e3o de polin\u00f4mios, passaremos do mais b\u00e1sico ao mais complicado, ou &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathority.org\/pt\/multiplicacao-de-polinomios-exemplos-exercicios-produto-resolvido-multiplicacao\/\"> <span class=\"screen-reader-text\">Multiplica\u00e7\u00e3o (ou produto) de polin\u00f4mios<\/span> Leia mais &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":[21],"tags":[],"class_list":["post-53","post","type-post","status-publish","format-standard","hentry","category-polinomios"],"yoast_head":"<!-- This site is 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