SOLUTION: Let f(x)=x�-2. Evaluate f(x+h)-f(x)/h for some nonzero constant h. You must show work. Okay so this is what I did, correct me if I am wrong f(x)= ((x�-2)+h)-x�-2/h can someo

Question 981784: Let f(x)=x�-2. Evaluate f(x+h)-f(x)/h for some nonzero constant h. You must show work.
Okay so this is what I did, correct me if I am wrong
f(x)= ((x�-2)+h)-x�-2/h can someone help me with the rest?
Found 2 solutions by Alan3354, josgarithmetic:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Let f(x)=x^2-2. Evaluate f(x+h)-f(x)/h for some nonzero constant h. You must show work.
Okay so this is what I did, correct me if I am wrong
f(x)= ((x^2-2)+h)-x^2-2/h can someone help me with the rest?
========================
f(x)=x^2-2
Sub x+h for x
f(x+h) = (x+h)^2 - 2
= x^2 + 2hx + h^2 - 2
-------------
f(x+h)-f(x)/h =
=
= 2x
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
To show the quotient correctly, you MUST properly group the numerator. The forward slash character alone does not act as a grouping symbol.

Be careful what you express!
is your function given.
.

You want to use your algebra skills to form the difference quotient for your function.

This need to be simplified.

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Be sure you understand .
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