5xy^2-(3xy^2-(4xy^2-2x^2y))+2x^2y-xy^2求_数学解答

5xy^2-(3xy^2-(4xy^2-2x^2y))+2x^2y-xy^2
求

人气：287 ℃　时间：2020-02-03 08:41:33

解答

5xy²-[3xy²-(4xy²-2x²y)]+2x²y-xy²=5xy²-（3xy²-4xy²+2x²y）+2x²y-xy²=5xy²-(-xy²+2x²y)+2x²y-xy²=5xy²+xy²-2x&#...