{"common":{"save":0,"post_id":"6541","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5768","post_id":"6541","mon_id":"1158921","chapter_id":"1158927","question":"<p>B\u1eadc c\u1ee7a \u0111\u01a1n th\u1ee9c <span class=\"math-tex\">$\\dfrac{5}{2}xy\\bigg(\\dfrac{-1}{10}\\bigg)x^2y^3$<\/span> là <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> .<\/p>","options":"","correct":["[\"7\"]"],"level":"1","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{5}{2}xy\\bigg(\\dfrac{-1}{10}\\bigg)x^2y^3$<\/span> = <span class=\"math-tex\">$\\dfrac{-1}{4}x^3y^4$<\/span> có b\u1eadc là 7 (s\u1ed1 m\u0169 c\u1ee7a x là 3, s\u1ed1 m\u0169 c\u1ee7a y là 4 nên 3 + 4 = 7).<\/p><p>S\u1ed1 c\u1ea7n \u0111i\u1ec1n là <span style=\"color:#16a085;\"><strong>7<\/strong><\/span> .<\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"0","date":"2023-07-02 03:38:31"},{"id":"5770","post_id":"6541","mon_id":"1158921","chapter_id":"1158927","question":"<p>\u0110\u01a1n th\u1ee9c <span class=\"math-tex\">$\\dfrac{-5}{2}x^2y(-2)xyz$<\/span> có<\/p>","options":["<strong>A.<\/strong> h\u1ec7 s\u1ed1 5; b\u1eadc 6.","<strong>B.<\/strong> h\u1ec7 s\u1ed1 5; b\u1eadc 5.","<strong>C.<\/strong> h\u1ec7 s\u1ed1 –5; b\u1eadc 5.","<strong>D.<\/strong> h\u1ec7 s\u1ed1 –5 ; b\u1eadc 6."],"correct":"1","level":"1","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{-5}{2}x^2y(-2)xyz$<\/span> = <span class=\"math-tex\">$5x^3y^2z$<\/span> có h\u1ec7 s\u1ed1 là 5 và b\u1eadc là 6<\/p><p>(s\u1ed1 m\u0169 c\u1ee7a x là 3, s\u1ed1 m\u0169 c\u1ee7a y là 2, s\u1ed1 m\u0169 c\u1ee7a z là 1 nên 3 + 2 + 1 = 6).<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"> <strong>A.<\/strong> h\u1ec7 s\u1ed1 5; b\u1eadc 6.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-02 03:43:02","option_type":"txt","len":2},{"id":"5771","post_id":"6541","mon_id":"1158921","chapter_id":"1158927","question":"<p>Tích c\u1ee7a hai \u0111\u01a1n th\u1ee9c –2xy và <span class=\"math-tex\">$\\dfrac{3}{2}$<\/span>xz là<\/p>","options":["<strong>A.<\/strong> 3x²yz","<strong>B.<\/strong> –3x²yz","<strong>C.<\/strong> –3xyz²","<strong>D.<\/strong> 3xy²z"],"correct":"2","level":"1","hint":"","answer":"<p>–2xy . <span class=\"math-tex\">$\\dfrac{3}{2}$<\/span>xz = –2 . <span class=\"math-tex\">$\\dfrac{3}{2}$<\/span> . xy . xz = –3x²yz .<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>B.<\/strong> –3x²yz.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-02 03:47:58","option_type":"txt","len":2}]}
