A couple of weeks ago I learned how to divide rational expressions. The first step is to cross out any numbers that reduce so you can make the fraction smaller, or if its factorable then factor it. The second step is to reciprocal which also means flip the fraction and then after that multiply straight across and if the factored denominator has the same factor at the top then you can cross them out and then after multiply straight across the top and straight across the bottom.

The example I used required me to factor so you can get a better understanding of what I meant.