how would you simplify a square root?
If one of the factors of the number under the radical is a
perfect square, you can take it out from under the radical.
examples sqrt(12) = sqrt(4 • 3) = sqrt(22 • 3) = 2 • sqrt(3)
sqrt(18) = sqrt(9 • 2) = sqrt(32 • 2) = 3 • sqrt(2)
sqrt(75) = sqrt(25 • 3) = sqrt(52 • 3) = 5 • sqrt(3)
.