## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$|x|$
Using $\sqrt{x^2}=|x|$, the given expression, $\sqrt[6]{x^6} ,$ simplifies to \begin{array}{l} \sqrt[6]{(x)^6} \\\\= |x| .\end{array} We put the variable in absolute value bars since it is being raised to an odd power.