Question

F(x)=x^2-2x+13
g(x)=-3x+8
(g o f)(1)

Answer 1

-28

Explanation:

g(f(x)) = -3(x²-2x+13) + 8

g(f(x)) = -3x²+6x-39+8

g(f(x)) = -3x²+6x-31

g(f(1)) = -3(1²)+6(1)-31 ⇒ -3 + 6 + (-31) ⇒ 3+(-31) ⇒ -28