x^2(x-1)-(x-1)^2怎么化简成(x-1)(x^2-x+1)

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x^2(x-1)-(x-1)^2怎么化简成(x-1)(x^2-x+1)

x^2(x-1)-(x-1)^2怎么化简成(x-1)(x^2-x+1)
x^2(x-1)-(x-1)^2怎么化简成(x-1)(x^2-x+1)

x^2(x-1)-(x-1)^2怎么化简成(x-1)(x^2-x+1)
提出来x-1不就行了

原式=x^2(x-1)-(x-1)(x-1)=(x-1)[x^2-(x-1)] 去括号,括号前有负号的括号内正变负,负变正。