x2+x2y-xy2-y3得值

汤显毛2022-10-04 11:39:541条回答

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x2+x2y-xy2-y3
=x^2(x+y)-(x+y)y^2
=(x+y)(x^2-y^2)
=(x+y)(x+y)(x-y)
=(x+y)^2(x-y)
1年前

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