SOLUTION: Another I need help on, I am soooo dumb! If f(x) = x2 +5, find f(a +h) -f(a) Possible answers: 2ah + h2 + 10 2ah + h2 + 5 2ah + h2 h2 Pleeeze show me how to solve

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Question 71559: Another I need help on, I am soooo dumb!

If f(x) = x2 +5, find f(a +h) -f(a)
Possible answers:
2ah + h2 + 10
2ah + h2 + 5
2ah + h2
h2
Pleeeze show me how to solve this so I can apply it to the other questions
Thanks to anyone
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
If f(x) = x^2 +5, find f(a +h) -f(a)
---------
Do each term separately, then subtract:
f(a+h) = (a+h)^2+5 = a^2+2ah+h^2+5
f(a) = a^2+5
-----------
Now subtract to get:
=2ah+h^2
---------
Cheers,
Stan H.
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