Since I can't write if a number is squared or anything I'll show you what I'm going to do. If X is squared I will just write x(x) That is what will represent squared. And since these are fractions I will use a slash to distinguish between the numerator and denominator. x(x) / (x-1)(x-1) MINUS (x-1) / x+1 Where I'm having trouble is finding the common denominator. I know to find the common denominator I would need to multiply x+1 to the first fraction and multiple (x-1)(x-1) to the second fraction. But I don't know what to do when you have three binomials for common denominator. Do I use FOIL with two of the binomials and then multiply the last binomial into that polynomial that I formed with FOIL?