# How do you simplify -3sqrt252?

$\sqrt{252} = \sqrt{2 .2 .3 .3 .7}$
$\sqrt{2 .2 .3 .3 .7} = 2.3 \sqrt{7} = 6 \sqrt{7}$
$- 3 \times 6 \sqrt{7} = - 18 \sqrt{7}$
color(brown)(-18sqrt7 is the simplified form.