# How do you simplify #-3sqrt(252)#?

##### 2 Answers

#### Explanation:

**Prime factorising #252#**

You check to see if you can write *perfect square* and another number.

#### Explanation:

Since *perfect square* itself, you can check to see if you can write it as a product of a perfect square and another number.

To do that, find the **prime factors** of

So, you can write

This means that the original expression will be equivalent to