4x²y×(-xy²)³
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4x²y×(-xy²)³
4x²y×(-xy²)³
4x²y×(-xy²)³
4x²y×(-xy²)³
=4x²y×(-x³y^6)
=-4x^5y^7
=4x²y×(-x³y的6次方)
=-4x的5次方y的7次方