# How do you express n^-2 as a positive exponent?

Use this rule for exponents to solve this problem: ${x}^{\textcolor{red}{a}} = \frac{1}{x} ^ \textcolor{red}{- a}$
${n}^{\textcolor{red}{- 2}} = \frac{1}{n} ^ \textcolor{red}{- - 2} = \frac{1}{n} ^ 2$