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x乘以(x-y)²减去2乘以(y-x)³用提取公因式法分解因式求解
人气:328 ℃ 时间:2020-03-28 22:15:32
解答
原式
=x(x-y)²-2(y-x)³
=x(x-y)²+2(x-y)³
=(x-y)²×[x+2(x-y)]
=(x-y)²(3x-2y)
=(x+y)(x-y)(3x-2y)
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