分解因式:x(x-y)(x²-xy-y²)-x²y(y-x)
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x(x-y)(x²-xy-y²)-x²y(y-x)
=x(x-y)(x²-xy-y²)+x²y(x-y)
=x(x-y)(x²-xy-y²+xy)
=x(x-y)(x²-y²)
=x(x-y)²(x+y)
=x(x-y)(x²-xy-y²)+x²y(x-y)
=x(x-y)(x²-xy-y²+xy)
=x(x-y)(x²-y²)
=x(x-y)²(x+y)
更多追问追答
追问
=x(x-y)(x²-xy-y²)+x²y(x-y)
=x(x-y)(x²-xy-y²+xy)
是怎么得到的?
追答
提取公因式x(x-y) 前面余下因式 x²-xy-y²
后面余下 xy
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