Question

find the value of x

Answer 1

$\sqrt[3]{x - \sqrt{2} - 3 \sqrt{2} } = 0$

On cubing both sides, we get


$x - \sqrt{2} - 3 \sqrt{2} = 0 \\ \\ x = \sqrt{2} + 3 \sqrt{2} \\ \\ x = 4 \sqrt{2}$