x^3-xy^2-x+y
=(x^3-xy^2)-(x-y)
=x(x^2-y^2)-(x-y)
=x(x+y)(x-y)-(x-y)
=(x-y)[x(x+y)-1]
=(x-y)(x^2+xy-1)
很高兴能帮助到你。若满意记得“采纳为满意答案”喔！祝你开心~O(∩_∩)O~
x³-xy²-x+y
=x(x²-y²)-(x-y)
=x(x+y)(x-y)-(x-y)
=(x-y)[x(x+y)-1]
=(x-y)(x²+xy-1)
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