# How do you simplify (3m)^-2 and write it using only positive exponents?

May 25, 2017

color(blue)(1/(9m^2)

#### Explanation:

${\left(3 m\right)}^{-} 2$

$\therefore = {3}^{-} 2 {m}^{-} 2$

$\therefore = {a}^{-} 2 = \frac{1}{a} ^ 2$

$\therefore = \frac{1}{{3}^{2} {m}^{2}}$

:.=color(blue)(1/(9m^2)