Hey Luke! Would you be able to send a picture of the question to clarify what we are looking for?
I think this is the answer if I've interpreted your question correctly!
@ValH just letting you know that you had forgotten to use the quotient rule in your proposed solution. Otherwise, you were on the right track.
If the question is interpreted as:
Differentiate (e^(-2x)) - (1/(e^x)) +1 with respect to x
then here is a step-by-step guide.
Hope it helps :)