Answer:

Explanation:
First, try to find any perfect squares in this. 9 is a perfect square, and 252/9 is 28.

Now that we have this broken out, we can take the square root of 9 and take it outside the radical.

Are there any other perfect squares? 4 is a perfect square, and 28/4 is 7, so repeat the same step but with 4.

Then take the square root of 4 out of the radical and multiply it with the other number, 3.


This is your answer.