{"common":{"save":0,"post_id":"6553","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5890","post_id":"6553","mon_id":"1158921","chapter_id":"1158928","question":"<p>Phân tích \u0111a th\u1ee9c thành nhân t\u1eed 5x²y – 10xy² .<\/p>","options":["<strong>A.<\/strong> 5xy(x – 2y)","<strong>B.<\/strong> 5xy(x + 2y)","<strong>C.<\/strong> 5x(x – 2y)","<strong>D.<\/strong> 5y(x – 2y)"],"correct":"1","level":"1","hint":"<p>Phân tích \u0111a th\u1ee9c thành nhân t\u1eed b\u1eb1ng cách \u0111\u1eb7t nhân t\u1eed chung.<\/p>","answer":"<p>5x²y – 10xy²<\/p><p>= 5xy(x – 2y)<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"> <strong>A.<\/strong> 5xy(x – 2y).<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-09 01:40:32","option_type":"txt","len":2},{"id":"5892","post_id":"6553","mon_id":"1158921","chapter_id":"1158928","question":"<p>Phân tích \u0111a th\u1ee9c thành nhân t\u1eed y² – 4y + 4 .<\/p>","options":["<strong>A.<\/strong> (y + 2)²","<strong>B.<\/strong> (y – 2)²","<strong>C.<\/strong> (2y – 1)²","<strong>D. <\/strong>(2y + 1)²"],"correct":"2","level":"1","hint":"<p>Phân tích \u0111a th\u1ee9c thành nhân t\u1eed b\u1eb1ng cách dùng h\u1eb1ng \u0111\u1eb3ng th\u1ee9c.<\/p>","answer":"<p>y² – 4y + 4<\/p><p>= y² – 2.y.2 + 2²<\/p><p>= (y – 2)²<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>B.<\/strong> (y – 2)².<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-09 01:43:34","option_type":"txt","len":2},{"id":"5894","post_id":"6553","mon_id":"1158921","chapter_id":"1158928","question":"<p>Phân tích \u0111a th\u1ee9c thành nhân t\u1eed 6x³y – 9x²y² + 12xy³ .<\/p>","options":["<strong>A.<\/strong> 3xy(2x² – 3xy – 4y²)","<strong>B.<\/strong> 3x²y(2x² + 3xy + 4y²)","<strong>C.<\/strong> 3xy²(2x² + 3xy – 4y²)","<strong>D.<\/strong> 3xy(2x² – 3xy + 4y²)"],"correct":"4","level":"1","hint":"<p>Phân tích \u0111a th\u1ee9c thành nhân t\u1eed b\u1eb1ng cách \u0111\u1eb7t nhân t\u1eed chung.<\/p>","answer":"<p>6x³y – 9x²y² + 12xy³<\/p><p>= 3xy(2x² – 3xy + 4y²)<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"> <strong>D.<\/strong> 3xy(2x² – 3xy + 4y²).<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-09 01:47:21","option_type":"txt","len":2}]}
