Question

If f(x) = -x2 + 4x - 9 and g(x) = x - 8, find g(f(-1))

Answer 1

-22

Explanation:

f(x) = -x2 + 4x - 9

g(x) = x - 8,

g(f(-1))

First find f(-1)

f(-1) = - (-1)^2 + 4(-1) - 9 = -1 -4-9 = -14

The find g(-14)

g(-14) = -14-8 = -22