多项式x的4次方y²-x²y的4次方分解因式的结果是( )A.x²y²-(x²-y²)

问题描述:

多项式x的4次方y²-x²y的4次方分解因式的结果是( )A.x²y²-(x²-y²)
多项式x的4次方y²-x²y的4次方分解因式的结果是( )
A.x²y²-(x²-y²) B.xy(x+y)(x²y-xy²)
C.x²y²(x+y)(x-y) D.(x²y+xy²)(x²y-xy²)

原式=x²y²(x²-y²)
=x²y²(x+y)(x-y)
选C