作业帮[x(x²y²-xy)-2y(x²-x³y)÷3x²y
来源：学生作业帮助网 编辑：作业帮 时间：2024/08/05 12:38:42
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[x(x²y²-xy)-2y(x²-x³y)÷3x²y
[x(x²y²-xy)-2y(x²-x³y)÷3x²y
[x(x²y²-xy)-2y(x²-x³y)÷3x²y
[x(x²y²-xy)-2y(x²-x³y)]÷3x²y
= (1/3)[(xy-1)-2(1-xy)]
= xy-1