# How do you factor #x^2-7x-18#?

##### 1 Answer

Sep 20, 2015

#### Explanation:

The answer should be in the form

So, in your equation you have

and

and we just need to solve for a and b.

Now, and this is very much intuitive, what easy multiplication do you know that give (-18) as an answer?

Yes, you got it.

What if you added them together?

whereas

Surely, the second one is better for our equation.

There you have it! So, both

Putting those back in the first equation, we have: