因式分解:(x²-y)²-(2y-y)²

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因式分解:(x²-y)²-(2y-y)²
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因式分解:(x²-y)²-(2y-y)²
因式分解:(x²-y)²-(2y-y)²

因式分解:(x²-y)²-(2y-y)²
=(x^2-y+2y-y)(x^2-y-2y+y)=x^2(X^2-2y)