因式分解(x-y)²-y(y-x)² ,

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因式分解(x-y)²-y(y-x)² ,
xON[1x E^[ȃTa %rHq";|}U;m7Տ_?֫vZ_>oWt!vVלjNOFkrN}=ui:yR7m=_̻ &{-:kNΦDSaȔd0 PV *)%e jm֢kOc1]~z

因式分解(x-y)²-y(y-x)² ,
因式分解(x-y)²-y(y-x)² ,

因式分解(x-y)²-y(y-x)² ,

=y[(x-y)²-1]
=y[(x-y)²+1][(x-y)²-1]