分解因式求：{x（x²y²-xy)-y(x²-x³y)}÷3x²y

分解因式求：{x（x²y²-xy)-y(x²-x³y)}÷3x²y
分解因式求：{x（x²y²-xy)-y(x²-x³y)}÷3x²y

分解因式求：{x（x²y²-xy)-y(x²-x³y)}÷3x²y
：{x（x²y²-xy)-y(x²-x³y)}÷3x²y
=（x^3y^2-x^2y-x^2y+x^3y^2)÷3x^2y
=2(x^3y^2-2x^2y）÷3x^2y
=2/3*（xy-1）

整理为2（xy-1）/3

（2XY-Y-1)/3