I've got a question that asks me to take the 4th derivitive of (2x+1)^4 ~ The problem I come across is once it becomes 24(2x+1)^0 I don't understand what the value is...

I'm not sure if I'm correct on this but (2x+1)^4 differentiated is:

4(2x+1)^3

12(2x+1)^2

24(2x+1)^1

24(2x+1)^0

Can anyone tell me if I did something wrong, and then answer my question? >.O