(x-y)ˆ3-(y-x)ˆ2分解因式
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(x-y)ˆ3-(y-x)ˆ2分解因式
(x-y)ˆ3-(y-x)ˆ2分解因式
(x-y)ˆ3-(y-x)ˆ2分解因式
(x-y)ˆ3-(y-x)ˆ2
= (x-y)² ( x-y-1)
(x-y)ˆ3-(y-x)ˆ2分解因式
解,得:
==[(x-y)-1](y-x)ˆ2
==(x-y-1)(y-x)ˆ2
x立方-y立方
(x-y)ˆ3-(y-x)ˆ2
=(x-y)ˆ3-(X-Y)ˆ2
=(X-Y)²(X-Y-1)
(x-y)^3-(y-x)^2=-(y-x)^3-(y-x)^2=-(y-x)^2(y-x+1)