SOLUTION: If f(x)= x^2 + 5, find f(a + h) - f(a). I haved tried to work this problem and the answer I got was 2ah + h^2 + 10, but it is not correct.

Question 60365This question is from textbook
: If f(x)= x^2 + 5, find f(a + h) - f(a).
I haved tried to work this problem and the answer I got was 2ah + h^2 + 10, but it is not correct. This question is from textbook

Answer by 303795(602) (Show Source): You can put this solution on YOUR website!
If

= Need to multiply the minus sign by each term in the bracket)
=
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Note If this part of introductory calculus and the h is very, very small then h^2 would be insignificant and f(a + h) - f(a) would approximate to 2ah.)
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