Sometimes people forget to do this part. This is if you're really being mathematically precise. This entire expression is the same as this one because this entire expression is still not defined at x equals negative one, although you can substitute x equals negative one here and now get a value. So if you substitute x equals negative one here, even if it's formally, if we're formally taking it away to be mathematically equivalent, this would be negative one minus two, which would be negative three, over negative one minus three, which would be negative four, which is equal to 3 4ths. So if this condition wasn't here, you could just evaluate it straight up and this is a pretty plain vanilla function. Wouldn't expect to see anything crazy happening here. And if I can just evaluate it at x equals negative one, I feel pretty good, I feel pretty good.