Question 204131
The idea here is to factor the radicand (quantity under the radical) and see if any of the factors is a perfect square.  If a factor is a perfect square, then take its square root and move out from under the radical.
Reduce:
{{{sqrt(120)}}} Factor the radicand.
{{{sqrt(4*30)}}} Take the square root of 4 and move it out in front.
{{{highlight(2sqrt(30))}}}