{"common":{"save":0,"post_id":"6554","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5907","post_id":"6554","mon_id":"1158921","chapter_id":"1158928","question":"<p>Phân tích \u0111a th\u1ee9c thành nhân t\u1eed xz – 3z + xy – 3y .<\/p>","options":["<strong>A.<\/strong> (x – 3)(z – y)","<strong>B.<\/strong> (x + 3)(z + y)","<strong>C.<\/strong> (x – 3)(z + y)","<strong>D.<\/strong> (x + 3)(z – y)"],"correct":"3","level":"2","hint":"<p>Phân tích \u0111a th\u1ee9c thành nhân t\u1eed b\u1eb1ng cách nhóm h\u1ea1ng t\u1eed và \u0111\u1eb7t nhân t\u1eed chung.<\/p>","answer":"<p>xz – 3z + xy – 3y<\/p><p>= (xz – 3z) + (xy – 3y)<\/p><p>= z(x – 3) + y(x – 3)<\/p><p>= (x – 3)(z + y)<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"> <strong>C.<\/strong> (x – 3)(z + y).<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-09 02:19:52","option_type":"txt","len":2},{"id":"5908","post_id":"6554","mon_id":"1158921","chapter_id":"1158928","question":"<p>Phân tích \u0111a th\u1ee9c thành nhân t\u1eed 2xz – 3z + 2xy – 3y.<\/p>","options":["<strong>A.<\/strong> (2x + 3)(z – y)","<strong>B.<\/strong> (2x – 3)(z – y)","<strong>C.<\/strong> (2x + 3)(z + y)","<strong>D.<\/strong> (2x – 3)(z + y)"],"correct":"4","level":"2","hint":"<p>Phân tích \u0111a th\u1ee9c thành nhân t\u1eed b\u1eb1ng cách nhóm h\u1ea1ng t\u1eed và \u0111\u1eb7t nhân t\u1eed chung.<\/p>","answer":"<p>2xz – 3z + 2xy – 3y<\/p><p>= (2xz – 3z) + (2xy – 3y)<\/p><p>= z(2x – 3) + y(2x – 3)<\/p><p>= (2x – 3)(z + y)<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>D.<\/strong> (2x – 3)(z + y).<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-09 02:23:27","option_type":"txt","len":2},{"id":"5911","post_id":"6554","mon_id":"1158921","chapter_id":"1158928","question":"<p>Phân tích \u0111a th\u1ee9c thành nhân t\u1eed xz + 3z + xy + 3y .<\/p>","options":["<strong>A.<\/strong> (x + y)(z + 3)","<strong>B.<\/strong> (x + 3)(z + y)","<strong>C.<\/strong> (xy + 3)(z + x)","<strong>D.<\/strong> (z + x)(y + 3)"],"correct":"2","level":"2","hint":"<p>Phân tích \u0111a th\u1ee9c thành nhân t\u1eed b\u1eb1ng cách nhóm h\u1ea1ng t\u1eed và \u0111\u1eb7t nhân t\u1eed chung.<\/p>","answer":"<p>xz + 3z + xy + 3y<\/p><p>= (xz + 3z) + (xy+ 3y)<\/p><p>= z(x + 3) + y(x + 3)<\/p><p>= (x + 3)(z + y)<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>B.<\/strong> (x + 3)(z + y).<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-09 02:26:42","option_type":"txt","len":2}]}
