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thuan147
2 năm trước
Bài 2: Giải các phương trình sau: a) (2x + 7)2 = 9(x + 2 )2 b) (x2 - 1)(x + 2)(x - 3) = (x - 1)(x2 - 4)(x + 5) c) (5x2 - 2x + 10)2 = (x2 + 10x - 8)2 d) (x2 + x)2 + 4(x2 + x) - 12 = 0 cái này khó quá :(
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