How do you factor #3y²-y+9y-3#?
Find the common factor in the first 2 terms that is the same as the second 2 terms, and arrive at
This problem is an a form where the first 2 terms and the second 2 terms have a common factor, so let's take advantage of that.
Let's factor out a
We can take the common factor and factor it out, like this: