# How do you factor #3x^(6n) y^2 - 39x^(3n) y^2 +120y^2#?

##### 1 Answer

Jun 5, 2016

#### Answer:

#### Explanation:

Let 3y^2 be common factor -->

Call

Find 2 numbers knowing sum (-13) and product (4).

They are -5 and -8.