1/2x²y·()=2x³y-x²y²

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1/2x²y·()=2x³y-x²y²1/2x²y·()=2x³y-x²y²1/2x²y·()=2x³

1/2x²y·()=2x³y-x²y²
1/2x²y·()=2x³y-x²y²

1/2x²y·()=2x³y-x²y²
0.5x²y·()=2x³y-x²y²?

()=(2x³y-x²y²)/(0.5x²y)
=(2x³y)/(0.5x²y)-(x²y²)/(0.5x²y)
=4x-2y