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2 năm trước
Bài 1: Giải phương trình sau: a) 3x - 11 = x + 7 b) 2x ( x - 3 ) = x - 3 c) $x^{2}$ - x - 12 = 0 d) ( 2x - 1 ) ( x + 7 ) = $x^{2}$ - 49 e) $\frac{x+2}{x-2}$ - $\frac{5}{x}$ = $\frac{8}{x^2-2x}$
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