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.