This week I learned how to solve for the difference of squares. To determine if a sequence can be identified as a difference of squares there are three things you should look for. First, you should look if the sequence is a binomial. If the sequence is not a binomial than it can not be a difference of squares. Secondly, you should look to see if everything in the sequence is a perfect square. Everything in the sequence needs to be a perfect square because when you factor a difference of squares they turn into conjugates of each other. Third, make sure that the binomial has a subtraction expression if it is not subtraction, this will not work.