4x²y-8xy²+7-4x²y+10xy²-4 -4x²-5y²-5x+3y-9-4y+3+x²+5x

题目

4x²y-8xy²+7-4x²y+10xy²-4 -4x²-5y²-5x+3y-9-4y+3+x²+5x
-4x²-5y²-5x+3y-9-4y+3+x²+5x 3x²-1-2x-5+3x-x²初中数学求解

答案

4x²y-8xy²+7-4x²y+10xy²-4=(4-4)x²y+(-8+10)xy²+(7-4)=2xy²+3-4x²-5y²-5x+3y-9-4y+3+x²+5x=(-4+1)x²-5y²+(-5+5)x+(3-4)y+(-9+3)=-3x²-5y²-y...