化简： 4xy²-3x²y-｛3x²y+xy²-[2xy²-（4x²y+y²x）]｝急 马上要~谢谢~追加10分~
问题描述：
化简： 4xy²-3x²y-｛3x²y+xy²-[2xy²-（4x²y+y²x）]｝
急 马上要~谢谢~追加10分~
答
您好！
去掉括号，得到
4xy²-3x²y-3x²y-xy²+2xy²-4x²y-y²x
=4xy²-xy²+2xy²-xy²-3x²y-3x²y-4x²y
=4xy²-10x²y
答
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