用因式分解的方法来解答!!!要过程!!!过程!!!(x-1)(x+2)대-4(x-1)대(x+2)=

2025-06-28 00:43:39
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回答1:

=(x-1)(x+2)((x+2)^2-4(x-1)^2)=(x-1)(x+2)(-3x^2+12x)=-3x(x-1)(x+2)(x-4)