# How do you factor by grouping #15b^2-22bc-5c^2#?

##### 1 Answer

May 3, 2015

To solve this using Grouping, we need 4 terms.

We can **split the middle term** of this expression to get 4 terms

We need to think of 2 numbers such that:

AND

After trying out a few numbers we get

We write the expression as:

We make **Groups** of two terms:

**Common Factor** to each of the terms