Question

I'm not sure what this question is asking..
Says find and simplify the expression f(x)=x^2-7
then below it says:
f(2+h)-f(2)=?
(calculus class)

Answer 1

find f(2 + h) by substituting 2 + h for x in f(x).
Find f(2) by plugging in 2 for x.
subtract

Answer 2

f(2 + h) = (2 + h)² - 7
f(2) = 2² - 7

f(2 + h) - f(2) = (2 + h)² - 7 - (2² - 7)

Answer 3

Thank you I got it!!!