# How do you simplify (25/16)^(-3/2)?

$\frac{64}{125}$
${\left(\frac{25}{16}\right)}^{- \frac{3}{2}} = {\left(\frac{16}{25}\right)}^{\frac{3}{2}} = {\sqrt{\frac{16}{25}}}^{3} = {\left(\frac{4}{5}\right)}^{3} = \frac{64}{125}$