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# How do you simplify (x ^ { - 15} ) ^ { - 6}?

Mar 9, 2018

${\left({x}^{\textcolor{red}{a}}\right)}^{\textcolor{b l u e}{b}} = {x}^{\textcolor{red}{a} \times \textcolor{b l u e}{b}}$
${\left({x}^{\textcolor{red}{- 15}}\right)}^{\textcolor{b l u e}{- 6}} \implies {x}^{\textcolor{red}{- 15} \times \textcolor{b l u e}{- 6}} \implies {x}^{90}$