{"common":{"save":0,"post_id":"7833","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7709","post_id":"7833","mon_id":"1159278","chapter_id":"1159327","question":"<p>Rút g\u1ecdn bi\u1ec3u th\u1ee9c <span class=\"math-tex\">$A=\\dfrac{\\sqrt[3]{4}+\\sqrt[3]{2}+2}{\\sqrt[3]{2}+1+\\sqrt[3]{4}}$<\/span> ta \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 là:<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\sqrt[3]{4}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\sqrt{3}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\sqrt{2}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\sqrt[3]{2}$<\/span>"],"correct":"4","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> <span class=\"math-tex\">$\\sqrt[3]{2}$<\/span><\/span><\/p><p><span class=\"math-tex\">$A=\\dfrac{\\sqrt[3]{4}+\\sqrt[3]{2}+2}{\\sqrt[3]{2}+1+\\sqrt[3]{4}}$<\/span> <span class=\"math-tex\">$=\\dfrac{\\sqrt[3]{2.2}+\\sqrt[3]{2}.1+\\sqrt[3]{4.2}}{\\sqrt[3]{2}+1+\\sqrt[3]{4}}$<\/span> <span class=\"math-tex\">$=\\dfrac{\\sqrt[3]{2}(\\sqrt[3]{2}+1+\\sqrt[3]{4})}{\\sqrt[3]{2}+1+\\sqrt[3]{4}}$<\/span> <span class=\"math-tex\">$=\\sqrt[3]{2}$<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-10-13 03:11:37","option_type":"math","len":0},{"id":"7710","post_id":"7833","mon_id":"1159278","chapter_id":"1159327","question":"<p>Rút g\u1ecdn bi\u1ec3u th\u1ee9c <span class=\"math-tex\">$B=-4.\\sqrt{\\dfrac{-25}{-16}}+5.\\sqrt{-\\dfrac{-9}{25}}$<\/span> ta \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 là: <\/p>","options":["<strong>A.<\/strong> 1","<strong>B.<\/strong> –1","<strong>C.<\/strong> –2","<strong>D.<\/strong> 2"],"correct":"3","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> –2<\/span><\/p><p><span class=\"math-tex\">$B=-4.\\sqrt{\\dfrac{-25}{-16}}+5.\\sqrt{-\\dfrac{-9}{25}}$<\/span><\/p><p><span class=\"math-tex\">$=-4.\\sqrt{\\dfrac{-25}{-16}}+5.\\sqrt{-\\dfrac{-9}{25}}$<\/span><\/p><p><span class=\"math-tex\">$=-4.\\dfrac{5}{4}+5.\\dfrac{3}{5}$<\/span> <\/p><p>= –5 + 3<\/p><p>= – 2<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-10-13 03:15:12","option_type":"txt","len":1},{"id":"7712","post_id":"7833","mon_id":"1159278","chapter_id":"1159327","question":"<p>Rút g\u1ecdn bi\u1ec3u th\u1ee9c <span class=\"math-tex\">$A=0,5.\\sqrt{0,04}+5.\\sqrt{0,36}$<\/span> ta \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 là:<\/p>","options":["<strong>A.<\/strong> 0","<strong>B.<\/strong> 2,4","<strong>C.<\/strong> 3","<strong>D.<\/strong> 3,1"],"correct":"4","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 3,1<\/span><\/p><p><span class=\"math-tex\">$A=0,5.\\sqrt{0,04}+5.\\sqrt{0,36}$<\/span><\/p><p><span class=\"math-tex\">$A=0,5.0,2+5.0,6$<\/span><\/p><p><span class=\"math-tex\">$A=0,1+3$<\/span><\/p><p><span class=\"math-tex\">$A=3,1$<\/span><\/p>","type":"choose","extra_type":"shape1","time":"0","user_id":"127","test":"0","date":"2024-10-13 03:17:26","option_type":"txt","len":0}]}