Help my find the first derivative of these two questions, please.

y = 6-e^x (Ans at the back of the book is -e^x)
y = 2x+3e^x (Ans at the back of the book is 2+3e^x)

And for this question find the first derivative when x=0
f(x) = (e^x+1)^2
Answer at the back of the book is 4.

Use that the derivative of e^(x) is

e^(x)