{"common":{"save":0,"post_id":"6551","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5928","post_id":"6551","mon_id":"1158921","chapter_id":"1158928","question":"<p>Vi\u1ebft bi\u1ec3u th\u1ee9c&nbsp;<span class=\"math-tex\">$x^3+64$<\/span> d\u01b0\u1edbi d\u1ea1ng t&iacute;ch.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$(x-4)(x^2-4x+16)$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$(x+4)(x^2-4x+16)$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$(x+2)(x^2-4x+16)$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$(x-4)(x^2+4x+16)$<\/span>"],"correct":"2","level":"2","hint":"","answer":"<p><span class=\"math-tex\">$x^3+64$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$x^3+4^3$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$(x+4)(x^2-4x+16)$<\/span><\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong>&nbsp;<span class=\"math-tex\">$(x+4)(x^2-4x+16)$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-09 03:03:16","option_type":"math","len":0},{"id":"5930","post_id":"6551","mon_id":"1158921","chapter_id":"1158928","question":"<p>Vi\u1ebft bi\u1ec3u th\u1ee9c&nbsp;<span class=\"math-tex\">$8b^3-27$<\/span> d\u01b0\u1edbi d\u1ea1ng t&iacute;ch.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$(2b-3)(4b^2+6b+9)$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$(2b-3)(4b^2-12b+9)$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$(2b-3)(2b^2+6b+3)$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$(2b+3)(4b^2-6b+9)$<\/span>"],"correct":"1","level":"2","hint":"","answer":"<p><span class=\"math-tex\">$8b^3-27$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$(2b)^3-3^3$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$(2b-3)(4b^2+6b+9)$<\/span><\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong>&nbsp;<span class=\"math-tex\">$(2b-3)(4b^2+6b+9)$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-09 03:06:54","option_type":"math","len":0},{"id":"5932","post_id":"6551","mon_id":"1158921","chapter_id":"1158928","question":"<p>R&uacute;t g\u1ecdn bi\u1ec3u th\u1ee9c&nbsp;<span class=\"math-tex\">$(x+1)(x^2-x+1)+5x^3$<\/span>.<\/p>","options":["<b>A.<\/b> <span class=\"math-tex\">$4x^3+1$<\/span>","<b>B.<\/b> <span class=\"math-tex\">$5x^3+1$<\/span>","<b>C.<\/b> <span class=\"math-tex\">$6x^3+1$<\/span>","<b>D.<\/b> <span class=\"math-tex\">$6x^3+3$<\/span>"],"correct":"3","level":"2","hint":"","answer":"<p><span class=\"math-tex\">$(x+1)(x^2-x+1)+5x^3$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$x^3+1^3+5x^3$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$6x^3+1$<\/span><\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><b>C.<\/b>&nbsp;<span class=\"math-tex\">$6x^3+1$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-09 03:13:38","option_type":"math","len":0}]}