{"common":{"save":0,"post_id":"6550","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5909","post_id":"6550","mon_id":"1158921","chapter_id":"1158928","question":"<p>Ch\u1ecdn câu \u0111úng.<\/p><p><span class=\"math-tex\">$a^3+b^3=$<\/span> <input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/><\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$(a+b)(a^2+ab+b^2)$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$(a+b)(a^2-ab+b^2)$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$(a+b)(a^2+2ab+b^2)$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$(a-b)(a^2+ab+b^2)$<\/span>"],"correct":"2","level":"1","hint":"","answer":"<p><span class=\"math-tex\">$a^3+b^3=$<\/span> <span class=\"math-tex\">$(a+b)(a^2-ab+b^2)$<\/span><\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> <span class=\"math-tex\">$(a+b)(a^2-ab+b^2)$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-09 02:23:40","option_type":"math","len":0},{"id":"5910","post_id":"6550","mon_id":"1158921","chapter_id":"1158928","question":"<p>Ch\u1ecdn câu \u0111úng.<\/p><p><span class=\"math-tex\">$a^3-b^3$<\/span> = <input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/><\/p>","options":["<strong>A. <\/strong><span class=\"math-tex\">$(a+b)(a^2+ab+b^2)$<\/span>","<strong>B. <\/strong><span class=\"math-tex\">$(a-b)(a^2-ab+b^2)$<\/span>","<strong>C. <\/strong><span class=\"math-tex\">$(a-b)(a^2+ab+b^2)$<\/span>","<strong>D. <\/strong><span class=\"math-tex\">$(a-b)(a^2+2ab+b^2)$<\/span>"],"correct":"3","level":"1","hint":"","answer":"<p><span class=\"math-tex\">$a^3-b^3$<\/span> = <span class=\"math-tex\">$(a-b)(a^2+ab+b^2)$<\/span><\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C. <\/strong><span class=\"math-tex\">$(a-b)(a^2+ab+b^2)$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-09 02:26:17","option_type":"math","len":0},{"id":"5912","post_id":"6550","mon_id":"1158921","chapter_id":"1158928","question":"<p>Vi\u1ebft \u0111a th\u1ee9c sau d\u01b0\u1edbi d\u1ea1ng tích: <span class=\"math-tex\">$8-x^3$<\/span>.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$(2+x)(4+2x+x^2)$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$(2-x)(4+4x+x^2)$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$(8-x)(8+8x+x^2)$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$(2-x)(4+2x+x^2)$<\/span>"],"correct":"4","level":"1","hint":"","answer":"<p><span class=\"math-tex\">$8-x^3$<\/span> <\/p><p>= <span class=\"math-tex\">$2^3-x^3$<\/span><\/p><p>= <span class=\"math-tex\">$(2-x)(4+2x+x^2)$<\/span><\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> <span class=\"math-tex\">$(2-x)(4+2x+x^2)$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-09 02:30:21","option_type":"math","len":0}]}
