# How do you express 81/9 as a power of 3?

Dec 8, 2017

$= {3}^{4} / {3}^{2}$ $= {\left({3}^{2} / 3\right)}^{2}$

#### Explanation:

$\frac{81}{9}$ can be written as:

$= \frac{3 \times 3 \times 3 \times 3}{3 \times 3}$

$= {3}^{4} / {3}^{2}$

or

$= {\left({3}^{2} / 3\right)}^{2}$