Question

I’m supposed to simplify; however, I’m absolutely clueless on how to simplify a radical. Can anyone help?

Answer 1

Your answer simplified should be
$-6 \sqrt{30}$

Answer 2

 Simplify the following:
-2×3 sqrt(5) sqrt(6)
3 (-2) = -6:
-6 sqrt(5) sqrt(6)
sqrt(5) sqrt(6) = sqrt(5×6):
-6 sqrt(5×6)
5×6 = 30:
Answer: -6 sqrt(30)