what is the cubed root of 2?
$$\sqrt[3]{2}\qquad $cannot be simplified$$$
It can however be approximated 2^(1/3)
$${{\mathtt{2}}}^{\left({\frac{{\mathtt{1}}}{{\mathtt{3}}}}\right)} = {\mathtt{1.259\: \!921\: \!049\: \!894\: \!873\: \!2}}$$