5(x2y-xy+2xy2-1)-2(3x2y+4xy2-2xy+3_) 化简
问题描述:
5(x2y-xy+2xy2-1)-2(3x2y+4xy2-2xy+3_) 化简
答
5(x2y-xy+2xy2-1)-2(3x2y+4xy2-2xy+3)
=5x²y-5xy+10xy²-5-6x²y-8xy²+4xy-6
=-x²y-xy+2xy²-11