And so what's 1 3rd plus one? Well, that's 4 3rds, 1 3rd plus 3 3rds, that's 4 3rds. So I could write it this way, I could write this x to the 4 3rds divided by 4 3rds. And this is going to be, and I'm going to evaluate this at the bounds. So I'm going to evaluate this at, and I'll do this in different colors, I'm going to evaluate it at eight, and I'm going to evaluate it at negative one, and I'm going to subtract it, evaluate it at negative one from this expression evaluated at eight. And so what is this going to be equal to? Well, actually, let me simplify a little bit more.