Given f(x) = radical x-2 and g(x) = x2 – x – 6. Find (g o f)(6).

Question

A. -4
B. 2
C. 24
D. 26
E. 48

Answer 1

g(f) = f^2 - f - 6
= (x-2) - √(x-2) - 6

g(f(6)) = 4 - 2 - 6 = -4