
分解因式:x^3-x^2y-xy^2-y^3
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x^3-x^2y-xy^2-y^3
=x^3-xy^2-x^2y-y^3
=x(x^2-y^2)-y(x^2-y^2)
=(x^2-y^2)(x-y)
=(x+y)(x-y)(x-y)
=(x+y)(x-y)^2
=x^3-xy^2-x^2y-y^3
=x(x^2-y^2)-y(x^2-y^2)
=(x^2-y^2)(x-y)
=(x+y)(x-y)(x-y)
=(x+y)(x-y)^2
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