因式分解(x-y)^4-4(x-y)^2

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因式分解(x-y)^4-4(x-y)^2因式分解(x-y)^4-4(x-y)^2因式分解(x-y)^4-4(x-y)^2(x-y)^4-4(x-y)^2=(x-y)^2[(x-y)^2-4]=(x-y

因式分解(x-y)^4-4(x-y)^2
因式分解(x-y)^4-4(x-y)^2

因式分解(x-y)^4-4(x-y)^2
(x-y)^4-4(x-y)^2
=(x-y)^2[(x-y)^2-4]
=(x-y)^2(x-y+2)(x-y-2)

=(x-y)^2*(x-y)^2-4(x-y)^2
=[(x-y)^2-4](x-y)^2
=(x-y+2)(x-y-2)(x-y)^2

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