{"id":14454,"date":"2018-04-13T22:30:03","date_gmt":"2018-04-13T21:30:03","guid":{"rendered":"https:\/\/www.acasinhadamatematica.pt\/?p=14454"},"modified":"2022-01-07T21:17:51","modified_gmt":"2022-01-07T21:17:51","slug":"resolve-as-seguintes-equacoes-utilizando-o-completamento-do-quadrado","status":"publish","type":"post","link":"https:\/\/www.acasinhadamatematica.pt\/?p=14454","title":{"rendered":"Resolve as seguintes equa\u00e7\u00f5es, utilizando o completamento do quadrado"},"content":{"rendered":"<p><ul id='GTTabs_ul_14454' class='GTTabs' style='display:none'>\n<li id='GTTabs_li_0_14454' class='GTTabs_curr'><a  id=\"14454_0\" onMouseOver=\"GTTabsShowLinks('Enunciado'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Enunciado<\/a><\/li>\n<li id='GTTabs_li_1_14454' ><a  id=\"14454_1\" onMouseOver=\"GTTabsShowLinks('Resolu\u00e7\u00e3o'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Resolu\u00e7\u00e3o<\/a><\/li>\n<\/ul>\n\n<div class='GTTabs_divs GTTabs_curr_div' id='GTTabs_0_14454'>\n<span class='GTTabs_titles'><b>Enunciado<\/b><\/span><\/p>\n<p>Resolve as seguintes equa\u00e7\u00f5es, utilizando o completamento do quadrado.<\/p>\n<ol>\n<li>\\({x^2} &#8211; 4x + 4 = 1\\)<\/li>\n<li>\\(x\\left( {x &#8211; 2} \\right) = 6 &#8211; 3x\\)<\/li>\n<li>\\(4{x^2} &#8211; 13x + 3 = 0\\)<\/li>\n<\/ol>\n<p><div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_next'><a href='#GTTabs_ul_14454' onClick='GTTabs_show(1,14454)'>Resolu\u00e7\u00e3o &gt;&gt;<\/a><\/span><\/div><\/div>\n\n<div class='GTTabs_divs' id='GTTabs_1_14454'>\n<span class='GTTabs_titles'><b>Resolu\u00e7\u00e3o<\/b><\/span><!--more--><\/p>\n<ol>\n<li>Ora,<br \/>\n\\[\\begin{array}{*{20}{l}}{{x^2} &#8211; 4x + 4 = 1}&amp; \\Leftrightarrow &amp;{{{\\left( {x &#8211; 2} \\right)}^2} = 1}\\\\{}&amp; \\Leftrightarrow &amp;{\\begin{array}{*{20}{c}}{x &#8211; 2 = &#8211; 1}&amp; \\vee &amp;{x &#8211; 2 = 1}\\end{array}}\\\\{}&amp; \\Leftrightarrow &amp;{\\begin{array}{*{20}{c}}{x = 1}&amp; \\vee &amp;{x = 3}\\end{array}}\\\\{}&amp;{}&amp;{}\\\\{}&amp;{}&amp;{S = \\left\\{ {1,\\;3} \\right\\}}\\end{array}\\]<\/li>\n<li>Ora,<br \/>\n\\[\\begin{array}{*{20}{l}}{x\\left( {x &#8211; 2} \\right) = 6 &#8211; 3x}&amp; \\Leftrightarrow &amp;{{x^2} + x &#8211; 6 = 0}\\\\{}&amp; \\Leftrightarrow &amp;{{{\\left( {x + \\frac{1}{2}} \\right)}^2} &#8211; \\frac{1}{4} &#8211; 6 = 0}\\\\{}&amp; \\Leftrightarrow &amp;{{{\\left( {x + \\frac{1}{2}} \\right)}^2} = \\frac{{25}}{4}}\\\\{}&amp; \\Leftrightarrow &amp;{\\begin{array}{*{20}{c}}{x + \\frac{1}{2} = &#8211; \\frac{5}{2}}&amp; \\vee &amp;{x + \\frac{1}{2} = \\frac{5}{2}}\\end{array}}\\\\{}&amp; \\Leftrightarrow &amp;{\\begin{array}{*{20}{c}}{x = &#8211; 3}&amp; \\vee &amp;{x = 2}\\end{array}}\\\\{}&amp;{}&amp;{}\\\\{}&amp;{}&amp;{S = \\left\\{ { &#8211; 3,\\;2} \\right\\}}\\end{array}\\]<\/li>\n<li>Ora,<br \/>\n\\[\\begin{array}{*{20}{l}}{4{x^2} &#8211; 13x + 3 = 0}&amp; \\Leftrightarrow &amp;{{{\\left( {2x &#8211; \\frac{{13}}{4}} \\right)}^2} &#8211; \\frac{{169}}{{16}} + 3 = 0}\\\\{}&amp; \\Leftrightarrow &amp;{{{\\left( {2x &#8211; \\frac{{13}}{4}} \\right)}^2} = \\frac{{121}}{{16}}}\\\\{}&amp; \\Leftrightarrow &amp;{\\begin{array}{*{20}{c}}{2x &#8211; \\frac{{13}}{4} = &#8211; \\frac{{11}}{4}}&amp; \\vee &amp;{2x &#8211; \\frac{{13}}{4} = \\frac{{11}}{4}}\\end{array}}\\\\{}&amp; \\Leftrightarrow &amp;{\\begin{array}{*{20}{c}}{x = \\frac{1}{4}}&amp; \\vee &amp;{x = 3}\\end{array}}\\\\{}&amp;{}&amp;{}\\\\{}&amp;{}&amp;{S = \\left\\{ {\\frac{1}{4},\\;3} \\right\\}}\\end{array}\\]<\/li>\n<\/ol><\/p>\n<div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_prev'><a href='#GTTabs_ul_14454' onClick='GTTabs_show(0,14454)'>&lt;&lt; Enunciado<\/a><\/span><\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Enunciado Resolu\u00e7\u00e3o Enunciado Resolve as seguintes equa\u00e7\u00f5es, utilizando o completamento do quadrado. \\({x^2} &#8211; 4x + 4 = 1\\) \\(x\\left( {x &#8211; 2} \\right) = 6 &#8211; 3x\\) \\(4{x^2} &#8211; 13x + 3 =&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":14114,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[213,97,303],"tags":[426,196,306],"series":[],"class_list":["post-14454","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-9--ano","category-aplicando","category-equacoes-do-2-o-grau","tag-9-o-ano","tag-casos-notaveis","tag-equacao-do-2-o-grau"],"views":1762,"jetpack_featured_media_url":"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2018\/03\/Mat56.png","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/14454","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=14454"}],"version-history":[{"count":0,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/14454\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/media\/14114"}],"wp:attachment":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14454"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14454"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14454"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=14454"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}