Answer
$2^{-3}x^{-15}y^{9}$
Work Step by Step
$(2x^5y^{-3})^{-3}=(2)^{-3}(x^5)^{-3}(y^{-3})^{-3}=2^{-3}x^{5(-3)}y^{(-3)(-3)}=2^{-3}x^{-15}y^{9}$
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