# How do you simplify 2x^-4y^2 and write it using only positive exponents?

Mar 19, 2017

${x}^{\textcolor{red}{a}} = \frac{1}{x} ^ \textcolor{red}{- a}$
$2 {x}^{\textcolor{red}{- 4}} {y}^{2} = \frac{2 {y}^{2}}{x} ^ \textcolor{red}{- - 4} = \frac{2 {y}^{2}}{x} ^ 4$