# How do you show that x+7 is a factor of #x^3-37x+84#. Then factor completely?

##### 1 Answer

Mar 18, 2018

The completely factored form is

#### Explanation:

You can use synthetic division. I'm not going to explain how to do synthetic division here, but this website has a really good explanation of how it works.

Now we have our polynomial as

We can factor our quadratic using

This is the fully factored polynomial. Hope this helped!