Answer
$\frac{5}{xy^{2}}$
Work Step by Step
We are given the expression $5x^{-1}y^{-2}$.
$5\times x^{-1}\times y^{-2}=5\times\frac{1}{x^{1}}\times\frac{1}{y^{2}}=\frac{5}{xy^{2}}$
In general, $x^{-b}=\frac{1}{x^{b}}$, for some number x.
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