#### Answer

$7\sqrt[3] {2x}+3\sqrt[3] {2x^2}$

#### Work Step by Step

Combine like radicals. In this example, $3\sqrt[3] {2x^2}$ cannot be combined with the other two radicals because they do not share the same radicand.
$8\sqrt[3] {2x}+3\sqrt[3] {2x^2}-\sqrt[3] {2x}$
$(8-1)\sqrt[3] {2x}+3\sqrt[3] {2x^2}$
$7\sqrt[3] {2x}+3\sqrt[3] {2x^2}$