# How do you write 8^-9 using only positive exponents?

Feb 4, 2017

Use this rule for exponents: ${x}^{\textcolor{red}{a}} = \frac{1}{x} ^ \textcolor{red}{- a}$

${8}^{\textcolor{red}{- 9}} = \frac{1}{8} ^ \textcolor{red}{- - 9} = \frac{1}{8} ^ 9$