#### Answer

$\sqrt[6]{x}$

#### Work Step by Step

Using $a^{m/n}=\sqrt[n]{a^m}=(\sqrt[n]{a})^m$, the given expression, $
\sqrt[30]{x^{5}}
,$ is equivalent to
\begin{array}{l}\require{cancel}
x^{5/30}
\\\\=
x^{1/6}
\\\\=
\sqrt[6]{x^1}
\\\\=
\sqrt[6]{x}
.\end{array}