{"id":9696,"date":"2012-10-01T17:59:48","date_gmt":"2012-10-01T16:59:48","guid":{"rendered":"https:\/\/www.acasinhadamatematica.pt\/?p=9696"},"modified":"2021-12-31T22:49:35","modified_gmt":"2021-12-31T22:49:35","slug":"qual-e-o-sinal-do-produto-desses-numeros","status":"publish","type":"post","link":"https:\/\/www.acasinhadamatematica.pt\/?p=9696","title":{"rendered":"Qual \u00e9 o sinal do produto desses n\u00fameros?"},"content":{"rendered":"<p><ul id='GTTabs_ul_9696' class='GTTabs' style='display:none'>\n<li id='GTTabs_li_0_9696' class='GTTabs_curr'><a  id=\"9696_0\" onMouseOver=\"GTTabsShowLinks('Enunciado'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Enunciado<\/a><\/li>\n<li id='GTTabs_li_1_9696' ><a  id=\"9696_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_9696'>\n<span class='GTTabs_titles'><b>Enunciado<\/b><\/span><\/p>\n<p>A soma de dois n\u00fameros diferentes de zero \u00e9 zero.<\/p>\n<p>Qual \u00e9 o sinal do produto desses n\u00fameros?<\/p>\n<p><div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_next'><a href='#GTTabs_ul_9696' onClick='GTTabs_show(1,9696)'>Resolu\u00e7\u00e3o &gt;&gt;<\/a><\/span><\/div><\/div>\n\n<div class='GTTabs_divs' id='GTTabs_1_9696'>\n<span class='GTTabs_titles'><b>Resolu\u00e7\u00e3o<\/b><\/span><!--more--><\/p>\n<p>Se esses n\u00fameros s\u00e3o diferentes de zero e a sua soma \u00e9 zero, ent\u00e3o esses n\u00fameros s\u00e3o sim\u00e9tricos, n\u00e3o nulos. Logo, s\u00e3o de sinais diferentes: um positivo e outro negativo.<\/p>\n<p>Consequentemente, o produto desses dois n\u00fameros \u00e9 negativo.<\/p>\n<p><span style=\"text-decoration: underline;\"><strong>Exemplo<\/strong><\/span>:<\/p>\n<p>Consideremos dois n\u00fameros n\u00e3o nulos, cuja soma \u00e9 zero: $-7$ e $+7$ (<span style=\"text-decoration: underline;\">n\u00fameros sim\u00e9tricos<\/span>).<\/p>\n<ul>\n<li>A sua soma \u00e9 zero: $\\left( { &#8211; 7} \\right) + \\left( { + 7} \\right) = 0$.<\/li>\n<li>O seu produto \u00e9 negativo: $\\left( { &#8211; 7} \\right) \\times \\left( { + 7} \\right) =\u00a0 &#8211; 49$.<\/li>\n<\/ul>\n<div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_prev'><a href='#GTTabs_ul_9696' onClick='GTTabs_show(0,9696)'>&lt;&lt; Enunciado<\/a><\/span><\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Enunciado Resolu\u00e7\u00e3o Enunciado A soma de dois n\u00fameros diferentes de zero \u00e9 zero. Qual \u00e9 o sinal do produto desses n\u00fameros? Resolu\u00e7\u00e3o &gt;&gt; Resolu\u00e7\u00e3o &lt;&lt; Enunciado<\/p>\n","protected":false},"author":1,"featured_media":14082,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[317,97,318],"tags":[428,320,319],"series":[],"class_list":["post-9696","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-7-o-ano","category-aplicando","category-numeros-inteiros","tag-7-o-ano","tag-multiplicacao","tag-numeros-inteiros-2"],"views":1988,"jetpack_featured_media_url":"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2018\/03\/Mat27.png","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/9696","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=9696"}],"version-history":[{"count":0,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/9696\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/media\/14082"}],"wp:attachment":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9696"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9696"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9696"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=9696"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}