# How do you find the exact value of the radical expression in simplest form for sqrt144 -sqrt40 -sqrt10?

Apr 9, 2015

$\sqrt{144} = 12$

$\sqrt{40} = 2 \sqrt{10}$

so
$\sqrt{144} - \sqrt{40} - \sqrt{10}$

$= 12 - 2 \sqrt{10} - 1 \sqrt{10}$

$= 12 - 3 \sqrt{10}$