# How do you factor #-9a^2-9a#?

##### 1 Answer

Nov 24, 2015

#### Answer:

#### Explanation:

What is a common factor of the equation?

**First** lets look at

The two numbers

**Factoring out -9**

New equation:

**Now** lets look at

The common factor of

**Factoring out the a**

New equation:

**Note:** Keep in mind that