因式分解:[x(x²y²-xy)-y(x²-x³y)]÷3x²y

问题描述:

因式分解:[x(x²y²-xy)-y(x²-x³y)]÷3x²y
急 十万火急
13:40之前有奖励!

[x(x²y²-xy)-y(x²-x³y)]÷3x²y
=[x²y(xy-1)-x²y(1-xy)]÷3x²y
=x²y[(xy-1)-(1-xy)]÷3x²y
=x²y[2(xy-1)]÷3x²y
=2(xy-1)/3