SOLUTION: If f(x) = x2 + 5, find f(a + h) − f(a)

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Question 7492: If f(x) = x2 + 5, find f(a + h) − f(a)
Answer by arunpaul(104) About Me  (Show Source):
You can put this solution on YOUR website!
If f(x) = x^2 + 5, find f(a + h) − f(a)
so f(a) = a^2+5
and f(a+h) = (a+h)^2+5
so f(a + h) − f(a)= (a+h)^2+5-a^2-5
= a^2-h^2+2ah+5-a^2-5
=-h^2+2ah (Ans)