I think you mean1. Find the domain of the function 6(square sign)x (square sign end)-12

The domain is the set of possible values for x. \sqrt{x} doesn't work for negative numbers so the domain is

f(x) = 18.2. Let f(x)= 18 calculate the following values

f(a+h)

f(a+h)-f(a) Over h

To find f(a+h) we replace all the xs with a+h.

so f(a+h) = 18

the same process gives us f(a) = 18, so