化简: 4xy²-3x²y-{3x²y+xy²-[2xy²-(4x²y+y²x)]}

问题描述:

化简: 4xy²-3x²y-{3x²y+xy²-[2xy²-(4x²y+y²x)]}
急 马上要~谢谢~追加10分~

4xy²-3x²y-{3x²y+xy²-[2xy²-(4x²y+y²x)]}
=4xy^2-3x^2y-3x^2y-xy^2+2xy^2-4x^2y-y^2x
=4xy^2-10x^2y