We evaluate, we simplify it. We evaluate the expression, the simplified expression now and now we were able to get a value. We were able to get 3 4ths and so we can feel pretty good that the limit here in this situation is 3 4ths. Now let's, and I would categorize what we've seen so far as the bulk of the limit exercises that you will likely encounter. Now the next two, I would call slightly fancier techniques. So if you get indeterminate form, especially you'll sometimes see it with radical expressions like this, rational radical expressions, you might want to multiply by a conjugate. So for example, in this situation right here, if you just tried to evaluate it at x equals four, you get the square root of four minus two over four minus four, which is zero over zero.