化简:(x^-2y³)²*(x^-1y)^-2÷(xy^-2)³=?

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化简:(x^-2y³)²*(x^-1y)^-2÷(xy^-2)³=?
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化简:(x^-2y³)²*(x^-1y)^-2÷(xy^-2)³=?
化简:(x^-2y³)²*(x^-1y)^-2÷(xy^-2)³=?

化简:(x^-2y³)²*(x^-1y)^-2÷(xy^-2)³=?