Average rate of change function

Question

f(x)=x² -2 find the rate of change on the interval (3,3+h)

Answer 1

 do these steps to get A.R.C:
1..calculate f(3+h)
2..calculate f(3)
3..calculate the difference (step 1's result - step 2's result
4..divide said difference by h, which is the difference 3+h -3; simplify.
DONE!