Answer
$3$
Work Step by Step
Using the properties of radicals, the given expression, $
\sqrt[3]{9}\sqrt[3]{3}
,$ simplifies to
\begin{array}{l}\require{cancel}
\sqrt[3]{9(3)}
\\\\=
\sqrt[3]{27}
\\\\=
\sqrt[3]{(3)^3}
\\\\=
3
\end{array}