Actually, I don't want to skip too many steps. Let's do, it's going to be this. This is when we evaluated at 4, and then we're going to subtract when we evaluate this whole thing at 1. When we evaluate it at 1, we do this in this green color. That's not the green color I thought I was going to do. When you evaluate it at 1, you get 1 squared over 2, which is 1 half, and then you get 1 to the 3 halves, which is just 1. This becomes minus 4 thirds, and then you have plus 1.