因式分解(x-y)^2-6(x^2-y^2)+9(x-y)^2

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因式分解(x-y)^2-6(x^2-y^2)+9(x-y)^2
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因式分解(x-y)^2-6(x^2-y^2)+9(x-y)^2
因式分解(x-y)^2-6(x^2-y^2)+9(x-y)^2

因式分解(x-y)^2-6(x^2-y^2)+9(x-y)^2
(x-y)^2-6(x^2-y^2)+9(x-y)^2=(x-y)(x-y-6x-6y+9x-9y)=(x-y)(2x-16y)=2(x-y)(x-8y)