f(x) = 4x2 + 5x - 3
g(x) = 423 – 3.x2 +5
Find (f – g)(x).
A. (f - g)(x) = 423 – 7x2 – 52 + 8
B. (f - g)(x) = -423 + 22 + 5x + 2
C. (f - 5)(2) = 4x3 + x2 + 5x +2
D. (f – g)(2) = -423 + 722 + 5x – 8