Question

Express ${27}^{-4}$ as a power with base $3$

Answer 1

$27$ can be written as $3\times 3\times 3=3^3$
Therefore ${27}^{-4}={\left(3^3\right)}^{-4}$
$3^{-12}$ $(\because {\left(a^m\right)}^n=a^{mn})$