{"common":{"save":0,"post_id":"7796","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7377","post_id":"7796","mon_id":"1159278","chapter_id":"1159282","question":"<p>B\u1ea5t ph\u01b0\u01a1ng trình nào d\u01b0\u1edbi \u0111ây là b\u1ea5t ph\u01b0\u01a1ng trình b\u1eadc nh\u1ea5t m\u1ed9t \u1ea9n?<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{x}-1>0$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{3}x+2<0$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$x^2>0$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$0x+3>0$<\/span>"],"correct":"2","level":"1","hint":"<p>B\u1ea5t ph\u01b0\u01a1ng trình b\u1eadc nh\u1ea5t m\u1ed9t \u1ea9n là b\u1ea5t ph\u01b0\u01a1ng trình có d\u1ea1ng: <span class=\"math-tex\">$ax+b\\ge0;ax+b\\le0;ax+b>0;ax+b<0$<\/span>, trong \u0111ó a, b là các s\u1ed1 \u0111ã cho và a <span class=\"math-tex\">$\\ne$<\/span> 0.<\/p>","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{3}x+2<0$<\/span>.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-10-06 10:24:09","option_type":"math","len":0},{"id":"7378","post_id":"7796","mon_id":"1159278","chapter_id":"1159282","question":"<p>B\u1ea5t ph\u01b0\u01a1ng trình nào sau \u0111ây là b\u1ea5t ph\u01b0\u01a1ng trình b\u1eadc nh\u1ea5t m\u1ed9t \u1ea9n?<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$2x+1>(2x+4)x$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$2x-3+5x< x-1+6$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$2x^2-2x-1>4x-x^2+3$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$x^2+2x+1=0$<\/span>"],"correct":"2","level":"1","hint":"<p>B\u1ea5t ph\u01b0\u01a1ng trình b\u1eadc nh\u1ea5t m\u1ed9t \u1ea9n là b\u1ea5t ph\u01b0\u01a1ng trình có d\u1ea1ng: <span class=\"math-tex\">$ax+b\\ge0;ax+b\\le0;ax+b>0;ax+b<0$<\/span>, trong \u0111ó a, b là các s\u1ed1 \u0111ã cho và a <span class=\"math-tex\">$\\ne$<\/span> 0.<\/p>","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> <span class=\"math-tex\">$2x-3+5x< x-1+6$<\/span>.<\/span><\/p><p>Ta có <span class=\"math-tex\">$2x-3+5x< x-1+6$<\/span> hay <span class=\"math-tex\">$6x-8<0$<\/span> là b\u1ea5t ph\u01b0\u01a1ng trình b\u1eadc nh\u1ea5t m\u1ed9t \u1ea9n.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-10-06 10:27:30","option_type":"math","len":0},{"id":"7380","post_id":"7796","mon_id":"1159278","chapter_id":"1159282","question":"<p>Cho b\u1ea5t ph\u01b0\u01a1ng trình 2x – 5 > 7, phép bi\u1ebfn \u0111\u1ed5i nào sau \u0111ây là \u0111úng?<\/p>","options":["<strong>A.<\/strong> 2x > 7 – 5","<strong>B.<\/strong> 2x > 7 + 5","<strong>C.<\/strong> 2x > 7.5","<strong>D.<\/strong> 2x > 5 – 7"],"correct":"2","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> 2x > 7 + 5.<\/span><\/p><p>Ta có: <span class=\"math-tex\">$2x-5>7$<\/span> hay <span class=\"math-tex\">$2x>7+5$<\/span> (chuy\u1ec3n v\u1ebf – 5 \u0111\u1ed5i d\u1ea5u thành + 5).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-10-06 10:30:34","option_type":"txt","len":2}]}