# How do you simplify #-11sqrt21-11sqrt21#?

##### 2 Answers

Apr 27, 2017

#### Answer:

#### Explanation:

Since the square roots alone have the same value they can be ignored and we can work with the numbers outside of the square root.

So,

Square roots are equal so...

and then rewrite our square root

Apr 27, 2017

#### Answer:

#### Explanation:

We can factor out the negative sign to get

We can add like terms so we get