求【(2x³y-2x²y²)+xy(2xy-x²)】÷x²y的值
问题描述:
求【(2x³y-2x²y²)+xy(2xy-x²)】÷x²y的值
答
【(2x³y-2x²y²)+xy(2xy-x²)】÷x²y
=(2x³y-2x²y²)/x²y+xy(2xy-x²)/x²y
=2x-2y+2y-x
=x
楼主可能把(2xy-2x²)打成(2xy-x²)
此题的题意或者最后的答案是0