1. The problem statement, all variables and given/known data Limx--->positive infinity sqrt(3x^5-2x) - sqrt(3x^5-7x) 2. Relevant equations 3. The attempt at a solution The first thing I did was rationalize. I got (5x)/ [ sqrt(3x^5-2x) + sqrt(3x^5-7x)]. Then I divided the top and bottom by x^5 but this is where I feel like Im doing something wrong. But I dont know what. Am I even supposed to divide by x^5 ? Because the other problems Ive solved so far have been with an x^2.