Given the following expression:
You can follow the steps shown below in order to factor it:
1. Identify if the leading coefficient is 1. In this case, you can see that this is:
So it is not 1.
2. Identify if you have a Greatest Common Factor that can be factor out. In this case you don't have it.
3. Notice that the expression has this form:
Rewrite the expression as following:
4. Simplify it by factoring out the common factors:
5. Rewriting it in factor form, you get:
The answer is: Third option.