Well, as x approaches infinity, 5 divided by infinity, this term is going to be 0. Super duper infinitely large denominator, this is going to be 0. That is going to approach 0. And same argument, this right here is going to approach 0. So all you're left with is the 4 and the negative 3. So this is going to be equal to negative 4 over a negative 3 or negative 4 thirds. So you didn't have to use L'Hospital's Rule for this problem.