Simplify the radical expression. Show all your steps.

√363-3√27

To simplify √363-3√27, we first need to simplify the square roots:

√363 = √(121 * 3) = 11√3

√27 = √(9 * 3) = 3√3

Now substitute back into the original expression:

11√3 - 3 * 3√3
= 11√3 - 9√3
= (11 - 9)√3
= 2√3

Therefore, √363-3√27 simplifies to 2√3.