Question

How do you solve it?

Answer 1

Start by distributing the square root of 8 inside the bracket.

$\sqrt{8}(\sqrt{24} + 3\sqrt{8}) = \sqrt{8}*\sqrt{24} + 3\sqrt{8}^2$
$= \sqrt{192} + 24$
$= \sqrt{64*3} + 24 = 8\sqrt{3} + 24$
$= 8(\sqrt{3} + 3)$