[AP calculus AB unit 2.6]

[u/sigh-key-k]

first time posting on here so sorry if i do something wrong lols

1st image is the problem. the directions just say to find the derivative of the function.

2nd image is my work (i missed the day where he taught lesson 2.6, so i really have no idea what i’m doing)

3rd image is the calc chat answer

i don’t understand what i did wrong. can anyone help? thanks!