When starting the project, you will first be asked to enter a binomial. You do not have to enter a variable for either term; however, you cannot raise a constant to a power, only a variable. If you want a variable in the first term, write (n is for a constant) na. If you want a to a power, write na^p (where p is the power you want). In the second term, separated from the first by a plus or minus, it's the same except you have to use the variable b instead of a. After entering the polynomial, you can enter a power, which just has to either be a positive integer or 0 (of course, if you enter 0, it just returns 1).
