Transcript text: Simplify the radical expression, where $n$ is an odd positive integer.
\[
\sqrt[n]{x^{4 n}}
\]
Write your answer in the form $A, \sqrt[n]{B}$, or $A \sqrt[n]{B}$, where $A$ and $B$ are constants or expressions in x . Use at most one radical in your answer, and at most one absolute value symbol in your expression for $A$.