因式分解:(x-3)3-(y-1)3-(x-y)3 =__________________

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因式分解:(x-3)3-(y-1)3-(x-y)3 =__________________
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因式分解:(x-3)3-(y-1)3-(x-y)3 =__________________
因式分解:(x-3)3-(y-1)3-(x-y)3 =__________________

因式分解:(x-3)3-(y-1)3-(x-y)3 =__________________
=3(X-3-Y+1-X+Y)
=3*(-2)
=-6

-6