{"common":{"save":0,"post_id":"4583","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6622","post_id":"4583","mon_id":"1158113","chapter_id":"1158128","question":"<p>Tính giá tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c <strong>P = (-103) + x<\/strong> t\u1ea1i <strong>x = -11.<\/strong><\/p><div class=\"lt123_imgs\"><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/hoa-qua\/cam.png\" \/><\/div><\/div>","options":["P = 90","P = 114","P = -114"],"correct":"3","level":"1","hint":"","answer":"<p>Giá tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c <strong>P = (-103) + x<\/strong> t\u1ea1i <strong>x = -11.<\/strong><\/p><p>Ta có : P = (-103) + (-11) = - (103 + 11) = -114<\/p><p>V\u1eady \u0111áp án \u0111úng là <span style=\"color:#16a085;\"><strong>P = -114<\/strong><\/span><\/p>","type":"choose","extra_type":"cloud","time":"0","user_id":"132","test":"3","date":"2021-08-26 14:25:39","option_type":"txt","len":0},{"id":"6624","post_id":"4583","mon_id":"1158113","chapter_id":"1158128","question":"<p>Tính <strong>(-25) - (100 - 25)<\/strong><\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/hoa-qua\/f7.png\" \/><\/div>","options":["-100","150","100"],"correct":"1","level":"1","hint":"<p>B\u1ecf ngo\u1eb7c r\u1ed3i tính m\u1ed9t các h\u1ee3p lí.<\/p>","answer":"<p>Ta có:<\/p><p><strong>(-25) - (100 - 25)<\/strong><\/p><p>= -25 - 100 + 25<\/p><p>= - 100 + 25 - 25<\/p><p>= -100 + (25 - 25)<\/p><p>= -100 + 0<\/p><p><strong>= -100<\/strong><\/p><p>V\u1eady \u0111áp án \u0111úng là<strong> <span style=\"color:#16a085;\">-100<\/span>.<\/strong><\/p>","type":"choose","extra_type":"shape2","time":"0","user_id":"132","test":"3","date":"2021-08-26 14:31:26","option_type":"txt","len":0},{"id":"6626","post_id":"4583","mon_id":"1158113","chapter_id":"1158128","question":"<p>Ch\u1ecdn câu \u0111úng.<\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/hoa-qua\/ot1.png\" \/><\/div>","options":["<strong>A.<\/strong> (-219) . (-101) > 0","<b>B. <\/b>(-35) . 35 > 0","<strong>C. <\/strong>(-37) . (-2021) < 0"],"correct":"1","level":"1","hint":"<p>Tích c\u1ee7a hai s\u1ed1 nguyên âm (ho\u1eb7c hai s\u1ed1 nguyên d\u01b0\u01a1ng) luôn l\u1edbn h\u01a1n 0.<\/p><p>Tích c\u1ee7a hai s\u1ed1 nguyên khác d\u1ea5u luôn nh\u1ecf h\u01a1n 0.<\/p>","answer":"<p>Xét các \u0111áp án<\/p><p><strong>A.<\/strong> (-219) . (-101) > 0 <span style=\"color:#16a085;\">\u0111úng<\/span><span style=\"color:#9b59b6;\"> <\/span>vì tích c\u1ee7a hai s\u1ed1 nguyên âm luôn l\u1edbn h\u01a1n 0.<\/p><p><b>B. <\/b>(-35) . 35 > 0 <span style=\"color:#e74c3c;\">sai<\/span> vì tích c\u1ee7a hai s\u1ed1 nguyên khác d\u1ea5u luôn nh\u1ecf h\u01a1n 0.<\/p><p><strong>C. <\/strong>(-37) . (-2021) < 0 <span style=\"color:#e74c3c;\">sai <\/span>vì tích c\u1ee7a hai s\u1ed1 nguyên âm luôn l\u1edbn h\u01a1n 0.<\/p><p>Ch\u1ecdn \u0111áp án <span style=\"color:#16a085;\"><strong>A. (-219) . (-101) > 0<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"3","date":"2021-08-26 14:37:55","option_type":"txt","len":2}]}