Question

If f(x) = 2x2 - 5 and g(x) = 3x + 3, find (f - g)(x).

A. 3x – 2x2 - 2
B. 2x2 – 3x - 2
C. 2x2 – 3x-8
D. - x² – 8

Answer 1

The answer is C-2x2-3x-8

Answer 2

2x^2 -3x -8

Explanation:

f(x) = 2x^2 - 5

g(x) = 3x + 3,

(f - g)(x)= 2x^2 - 5 -(3x + 3)

Distribute the minus sign

(f - g)(x)= 2x^2 - 5 -3x - 3

Combine like terms

= 2x^2 -3x -8