{"common":{"save":0,"post_id":"6527","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5676","post_id":"6527","mon_id":"1158921","chapter_id":"1158927","question":"<p>\u0110\u01a1n th\u1ee9c&nbsp; 2x(&ndash;3)yz&nbsp; c&oacute; h\u1ec7 s\u1ed1 l&agrave;<\/p>","options":["<strong>A.<\/strong> &ndash;6","<strong>B.<\/strong> 6","<strong>C.<\/strong> &ndash;1","<strong>D.<\/strong> 2"],"correct":"1","level":"2","hint":"<p>Trong m\u1ed9t \u0111\u01a1n th\u1ee9c thu g\u1ecdn, ph\u1ea7n s\u1ed1 g\u1ecdi l&agrave; h\u1ec7 s\u1ed1, ph\u1ea7n c&ograve;n l\u1ea1i g\u1ecdi l&agrave; ph\u1ea7n bi\u1ebfn.<\/p>","answer":"<p>Ta c&oacute;&nbsp; &nbsp;2x(&ndash;3)yz =&nbsp;&ndash;6xyz.<\/p><p>\u0110\u01a1n th\u1ee9c n&agrave;y c&oacute; h\u1ec7 s\u1ed1 l&agrave;&nbsp; &nbsp;&ndash;6.<\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp; &nbsp;<span style=\"color:#16a085;\">&nbsp;<strong>A.<\/strong>&nbsp;&ndash;6<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-06-27 14:37:06","option_type":"txt","len":1},{"id":"5679","post_id":"6527","mon_id":"1158921","chapter_id":"1158927","question":"<p>\u0110\u01a1n th\u1ee9c&nbsp;<span class=\"math-tex\">$\\dfrac{5}{4}x^24x^3y^2$<\/span>&nbsp;c&oacute;<\/p>","options":["<strong>A.<\/strong> h\u1ec7 s\u1ed1 <span class=\"math-tex\">$\\dfrac{5}{4}$<\/span> , b\u1eadc 7.","<strong>B.<\/strong> h\u1ec7 s\u1ed1 5, b\u1eadc 7.","<strong>C.<\/strong> h\u1ec7 s\u1ed1 4, b\u1eadc 7","<strong>D.<\/strong> h\u1ec7 s\u1ed1 5 b\u1eadc 6."],"correct":"2","level":"2","hint":"","answer":"<p>Ta c&oacute;&nbsp;&nbsp;<span class=\"math-tex\">$\\dfrac{5}{4}x^24x^3y^2$<\/span>&nbsp;=&nbsp;<span class=\"math-tex\">$5x^5y^2$<\/span>&nbsp; c&oacute; h\u1ec7 s\u1ed1 5 v&agrave; b\u1eadc 7.<\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp; &nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong> h\u1ec7 s\u1ed1 5, b\u1eadc 7.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-06-28 11:27:59","option_type":"math","len":0},{"id":"5681","post_id":"6527","mon_id":"1158921","chapter_id":"1158927","question":"<p>\u0110\u01a1n th\u1ee9c&nbsp; 2x(&ndash;3)yx&sup3;&nbsp; c&oacute; ph\u1ea7n bi\u1ebfn l&agrave;<\/p>","options":["<strong>A.<\/strong> xy","<strong>B.<\/strong> 2xyx&sup3;","<strong>C.<\/strong> <span class=\"math-tex\">$x^4y$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$-x^4y$<\/span>"],"correct":"3","level":"2","hint":"<p>Trong m\u1ed9t \u0111\u01a1n th\u1ee9c thu g\u1ecdn, ph\u1ea7n s\u1ed1 g\u1ecdi l&agrave; h\u1ec7 s\u1ed1, ph\u1ea7n c&ograve;n l\u1ea1i g\u1ecdi l&agrave; ph\u1ea7n bi\u1ebfn.<\/p>","answer":"<p>Ta c&oacute;&nbsp; &nbsp;&nbsp;2x(&ndash;3)yx&sup3; =&nbsp;<span class=\"math-tex\">$-6x^4y$<\/span>&nbsp; c&oacute; ph\u1ea7n bi\u1ebfn l&agrave;&nbsp;&nbsp;<span class=\"math-tex\">$x^4y$<\/span>&nbsp;.<\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp; &nbsp;<span style=\"color:#16a085;\"><strong>C.<\/strong>&nbsp;<span class=\"math-tex\">$x^4y$<\/span>.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-06-28 11:32:36","option_type":"math","len":0}]}