Question

If f(x) = 3 x2 + 2 and g(x) = x2 - 9, find (f - g)(x).

Answer 1

2x^2 +11

Explanation:

(x) = 3 x^2 + 2

g(x) = x^2 - 9

(f - g)(x) =3 x^2 + 2 - (x^2 - 9)

Distribute the minus sign

= 3x^2 +2 - x^2 +9

Combine like terms

= 2x^2 +11