Question

Determine the following (f-g)(3) if f(x)=x^2+1 & g(x)=x-2

Answer 1

so (f-g) means you subtract the two functions to get x^2 + 1 - (x-2) = x^2 -x +3. Then sub in 3 for x to get 9-3+3 so your answer is 9.
hope that helps.

Answer 2

3x^2-3x+9