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thaomasos101
2 năm trước
-2x(x+5)<0 (2x-1)(6-x)>0 (2-4x)(x+7)<0 |x+3|<_2 (x+3)(x2+2)>0 (x-2)(-9-x2)<0 |x+25|+|5-y|=0 Câu 4 dấu <_ là bé hơn hoặc bằng nhé Câu 5 và câu 6 x2+2 x là x mũ 2 nhé -9-x2 x cũng là x mũ 2 Giúp mình làm bài nhé!
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