And then plus x, and you could view it as I'm doing the same thing. If this is x to the zero, it'll be x to the first, x to the first over one, which is just x. And I'm gonna evaluate that at zero and subtract from that it evaluated at one, sorry, it evaluated at negative one. And so this is going to be equal to, if I evaluate it at zero, let me do this in another color. If I evaluate it at zero, it's going to be zero squared over two, which is, well, I'll just write it zero squared over two plus zero. Well, all of that's just gonna be equal to zero, minus it evaluated at, it evaluated at negative one. So minus negative one squared, negative one squared over two plus negative one.