-2x²y,2x³y²,-4xy²,3xy,加减乘除后,使结果为x²

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-2x²y,2x³y²,-4xy²,3xy,加减乘除后,使结果为x²
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-2x²y,2x³y²,-4xy²,3xy,加减乘除后,使结果为x²
-2x²y,2x³y²,-4xy²,3xy,加减乘除后,使结果为x²

-2x²y,2x³y²,-4xy²,3xy,加减乘除后,使结果为x²
(-2x²y)(3xy)+2x³y²=-4x³y²
(-4x³y²)/(-4xy²)=x²