Well, 2 squared plus 1 is 5. So it's 5 times 1 half. And then finally, you have the function evaluated at 2.5. 2.5 squared is 6.25 times 1 half. 6.25 plus 1. So that's 7.25 times 1 half. And just to make the math simpler, we can factor out the 1 half.