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(x-y)^2-(x-y)^3因式分解

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(x-y)^2-(x-y)^3因式分解
2、(x+y)^2-(x+y)^3
3、(x-y)^2-(y-x)^3
(x-y)^2-(x-y)^3
=(x-y)^2[1-(x-y)]
=(x-y)^2(1-x+y)
2.(x+y)^2-(x+y)^3
=(x+y)^2[1-(x+y)]
=(x+y)^2(1-x-y)
3、(x-y)^2-(y-x)^3
=(x-y)^2+(x-y)^3
=(x-y)^2[1+(x+y)]
=(x-y)^2(1+x+y)