1. The problem statement, all variables and given/known data Ok, im learning about derivative's, and they seem to elude me for some reason. I have this. x2+x I know the derivative is 5, and the function is differentiable at 2. But I don't understand how you get it. I know the limit you use to find it, but the shortcut is nxn-1 right? Where does n come from? And x=2 right? Would it be 2*21? But thats not 5, its 4. What am I doing wrong? Please, detailed answers are very very appreciated. 2. Relevant equations Pretty sure that I noted all the nessicary equations above. 3. The attempt at a solution I said what I attempted above.