{"article_info":{"article_id":145677,"cat_id":1540,"cat_title":"SBT Toán 8 - Kết nối tri thức","publish_time":1691373480,"cat_id2":1540,"is_link":0,"thumbnail":"https://img.loigiaihay.com/picture/article/2023/0807/resize_1-0_8.png","title":"Giải bài 1.26 trang 16 sách bài tập toán 8 - Kết nối tri thức với cuộc sống","label":"Bài 1.26 trang 16 sách bài tập toán 8 - Kết nối tri thức với cuộc sống","alias":"giai-bai-126-trang-16-sach-bai-tap-toan-8-ket-noi-tri-thuc-voi-cuoc-song","introtext":"Rút gọn biểu thức","content":"<style>\r\n.method-close-icon{position: relative;float: right;top: 6px;transform: rotate(270deg);-ms-transform:rotate(270deg);-moz-transform:rotate(270deg);-webkit-transform:rotate(270deg);-o-transform:rotate(270deg);}\r\n.method-open-icon{position: relative;float: right;top: 6px;}\r\n</style>\r\n<p><strong style=\"font-size: 16px;\">Đề bài</strong></p><p>Rút gọn biểu thức</p>\r\n<p>a) \\(\\left( {5{x^3}{y^2} - 4{x^2}{y^3}} \\right):2{x^2}{y^2} - \\left( {3{x^2}y - 6x{y^2}} \\right):3xy\\);</p>\r\n<p>b) \\(5{x^2}y{z^3}:{z^2} - 3{x^2}{y^3}z:xy - 2xyz\\left( {x + y} \\right)\\).</p><div id=\"pos_end_question\"></div><div style=\"padding-top: 10px;padding-bottom: 2px;margin-bottom: 10px;\"><p class=\"show-detail-method\" style=\"background: #654bc2;text-align: center;border-radius:5px;padding: 10px;margin-bottom: 0px;\" onclick=\"showDetailMethod();\"><strong style=\"font-size: 16px;\">Phương pháp giải - Xem chi tiết</strong><img class=\"method-open-icon\" id=\"method_colapse_icon\" src=\"data:image/png;base64,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\"></p>  <div class=\"content_method_content\" style=\"padding: 10px 10px 5px 10px;border: dashed 1px #654bc2;border-top:none;\"><p>Thực hiện phép chia đa thức cho đơn thức rồi thu gọn biểu thức.</p>\r\n<p>Muốn chia đa thức A cho đơn thức B ta chia từng hạng tử của A cho B rồi cộng các kết quả với nhau.</p>  </div>\r\n<script type=\"text/javascript\">\r\n    var is_open =true;\r\n    function showDetailMethod(){\r\n        if(is_open){\r\n            document.querySelector(\".content_method_content\").style.display='none';\r\n            document.getElementById(\"method_colapse_icon\").classList.remove(\"method-open-icon\");\r\n            document.getElementById(\"method_colapse_icon\").classList.add(\"method-close-icon\");\r\n        }else{\r\n            document.querySelector(\".content_method_content\").style.display='block';\r\n            document.getElementById(\"method_colapse_icon\").classList.remove(\"method-close-icon\");\r\n            document.getElementById(\"method_colapse_icon\").classList.add(\"method-open-icon\");\r\n        }\r\n        is_open = !is_open;\r\n    }\r\n</script>\r\n</div><p><strong style=\"font-size: 16px;\">Lời giải chi tiết</strong></p><p>a) \\(\\left( {5{x^3}{y^2} - 4{x^2}{y^3}} \\right):2{x^2}{y^2} - \\left( {3{x^2}y - 6x{y^2}} \\right):3xy\\)</p>\r\n<p>\\( = \\left( {5{x^3}{y^2}:2{x^2}{y^2}} \\right) + \\left( { - 4{x^2}{y^3}:2{x^2}{y^2}} \\right) - \\left( {3{x^2}y:3xy} \\right) - \\left( { - 6x{y^2}:3xy} \\right)\\)</p>\r\n<p>\\( = \\frac{5}{2}x - 2y - x + 2y = \\left( {\\frac{5}{2}x - x} \\right) + \\left( { - 2y + 2y} \\right)\\)</p>\r\n<p>\\( = \\frac{3}{2}x\\).</p>\r\n<p>b) \\(5{x^2}y{z^3}:{z^2} - 3{x^2}{y^3}z:xy - 2xyz\\left( {x + y} \\right)\\)</p>\r\n<p>\\( = 5{x^2}yz - 3x{y^2}z - 2{x^2}yz - 2x{y^2}z\\)</p>\r\n<p>\\( = \\left( {5{x^2}yz - 2{x^2}yz} \\right) + \\left( { - 3x{y^2}z - 2x{y^2}z} \\right)\\)</p>\r\n<p>\\( = 3{x^2}yz - 5x{y^2}z\\)</p>","common_article":"","display_type":1,"vungoi_exam_id":"","article_type":1,"cmt_count":0,"zip_status":1,"last_modified_time":1691373583,"last_zip_time":1691373583,"zip_link":"https://offline.loigiaihay.com/articles/1540/145677/145677_1691373583.zip","picture":"https://img.loigiaihay.com/picture/article/2023/0807/1-0_8.png","youtube_id":"","video_start_time":"0","quizlet_id":"0","ref_article_id":0,"readmore_display_type":0,"wiki":0,"comment_url":"https://loigiaihay.com/comment/giai-bai-126-trang-16-sach-bai-tap-toan-8-ket-noi-tri-thuc-voi-cuoc-song-c1540a145677.html","origin_url":"https://loigiaihay.com/giai-bai-126-trang-16-sach-bai-tap-toan-8-ket-noi-tri-thuc-voi-cuoc-song-c1540a145677.html","relate_link":[],"exam_file":"","solution_file":""},"callouts":[],"relate_articles":[],"others_in_cat":[{"article_id":146378,"cat_id":1540,"publish_time":1691630940,"is_link":0,"thumbnail":"https://img.loigiaihay.com/picture/article/2023/0810/resize_1-0_8.png","title":"Giải câu hỏi trắc nghiệm trang 17, 18 sách bài tập toán 8 - Kết nối tri thức với cuộc sống","alias":"giai-cau-hoi-trac-nghiem-trang-17-18-sach-bai-tap-toan-8-ket-noi-tri-thuc-voi-cuoc-song","introtext":"Chọn phương án đúng trong mỗi câu sau:","display_type":2,"article_type":1},{"article_id":145676,"cat_id":1540,"publish_time":1691373360,"is_link":0,"thumbnail":"https://img.loigiaihay.com/picture/article/2023/0807/resize_1-0_7.png","title":"Giải bài 1.25 trang 16 sách bài tập toán 8 - Kết nối tri thức với cuộc sống","alias":"giai-bai-125-trang-16-sach-bai-tap-toan-8-ket-noi-tri-thuc-voi-cuoc-song","introtext":"Thực hiện phép chia","display_type":1,"article_type":1},{"article_id":145675,"cat_id":1540,"publish_time":1691373060,"is_link":0,"thumbnail":"https://img.loigiaihay.com/picture/article/2023/0807/resize_1-0_6.png","title":"Giải bài 1.24 trang 16 sách bài tập toán 8 - Kết nối tri thức với cuộc sống","alias":"giai-bai-124-trang-16-sach-bai-tap-toan-8-ket-noi-tri-thuc-voi-cuoc-song","introtext":"a) Tìm đơn thức M biết rằng (2,7{x^3}{y^4}{z^2}:M = 0,9{x^2}yz);\r\nb) Biết (left( { - frac{2}{5}{x^2}yz} right).N = {x^4}{y^3}{z^2}). Hãy tìm đơn thức N.\r\n","display_type":1,"article_type":1}],"event_info":{"title":"Bài 5. Phép chia đa thức cho đơn thức - SBT Toán 8 KNTT","cat_id":1540,"alias":"bai-5-phep-chia-da-thuc-cho-don-thuc-sbt-toan-8-kntt","introtext":"","type":"event","item_id":32719,"item_type":2},"banner":[],"top_banner":"","content_expanded":[],"child_events":[{"id":"32719","title":"Bài 5. Phép chia đa thức cho đơn thức - SBT Toán 8 KNTT","short_title":"Bài 5. Phép chia đa thức cho đơn thức","alias":"bai-5-phep-chia-da-thuc-cho-don-thuc-sbt-toan-8-kntt","picture":"picture/event/2023/0803/1-0_12.png","is_link":"0","links":"","is_hot":"0","is_all":"0","category_id":"1540","ordering":"32719","parent_id":"32709"}],"parent_events":[{"id":"32709","title":"Chương I. Đa thức - SBT Toán 8 KNTT","short_title":"Chương I. Đa thức","alias":"chuong-i-da-thuc-sbt-toan-8-kntt","picture":"picture/event/2023/0803/1-0_2.png","is_link":"0","links":"","is_hot":"0","is_all":"0","category_id":"1540","ordering":"32709"}],"cfg_info":{"last_cfg_time":"1521866679","ad.popup_frequency":"0","ad.adsense.detail_bottom.unit_id":"ca-app-pub-8529835372050931/9927553003","ad.adsense.popup.unit_id":"ca-app-pub-8529835372050931/2161779402","current.force.update.version":"181","support.email":"loigiaihay.com@gmail.com","support.fanpage":"https://www.facebook.com/Loigiaihay/","popup_rating_after":"86400","admob.app_id":"ca-app-pub-8529835372050931~4358271409","admob.unit.article_detail_bottom":"ca-app-pub-8529835372050931/1883637630","admob.unit.article_detail_top":"ca-app-pub-8529835372050931/8604898230","admob.unit.event_article_top":"ca-app-pub-8529835372050931/7406887709","admob.unit.interestial":"ca-app-pub-8529835372050931/2741937409","ios_appstore_link":"https://itunes.apple.com/us/app/loigiaihay/id1209891610?mt=8","android_appstore_link":"https://play.google.com/store/apps/details?id=com.tp.loigiaihay","min_version":"2.1.3","latest_version":"1.3.9","force_update":false},"popup_ads":[]}