(x^2y^3-x^3y^2)·(x^2-y^2)要过程

问题描述:

(x^2y^3-x^3y^2)·(x^2-y^2)要过程

(x²y³-x³y²)·(x²-y²)
=x²y²(y-x)(x+y)(x-y)
=-x²y²(x+y)(x-y)²
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