## Algebra 2 Common Core

When $n$ is even: $\sqrt[n]{m^n} = |m|$ When $n$ is odd: $\sqrt[n]{m^n} = m$
The principal square root is always non-negative. This means that: When $n$ is even, then $\sqrt[n]{m^n} = |m|.$ When $n$ is odd, $\sqrt[n]{m^n} = m.$