-2x²y,2x³y²,-4xy²,3xy,加减乘除后,使结果为x²

问题描述:

-2x²y,2x³y²,-4xy²,3xy,加减乘除后,使结果为x²

(-2x²y)(3xy)+2x³y²=-4x³y²
(-4x³y²)/(-4xy²)=x²