计算(-xy)(x+2x²y)

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计算(-xy)(x+2x²y)计算(-xy)(x+2x²y)计算(-xy)(x+2x²y)(-xy)(x+2x²y)=-x²y-2x^3y²

计算(-xy)(x+2x²y)
计算(-xy)(x+2x²y)

计算(-xy)(x+2x²y)
(-xy)(x+2x²y)
=-x²y-2x^3y²