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nguyenthu.sphn2
2 năm trước
Bài 1: Tìm x, biết a) 3x(12x – 4) – 9x(4x – 3) =30 b) x(5 – 2x) + 2x(x – 1) = 15 c) 3(2x – 3) + 2(2 – x) = –3 d) 2x(x2 – 2) + x2(1 – 2x) – x2 = –1 LÀM GIÚP MÌNH NHA
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