So you have an x squared times 4 minus 5 over x. x squared times 5 over x is going to be 5x. Divided by, let's factor an x squared out of the numerator. So x squared times 1 over x squared minus 3. And then these x squareds cancel out. This is going to be equal to the limit as x approaches infinity of 4 minus 5 over x over 1 over x squared minus 3. And what's this going to be equal to? Well, as x approaches infinity, 5 divided by infinity, this term is going to be 0.