Question

F(x)=x²-3x + 12
g(x) = 5x + 8
Find: (gof)(x)

Answer 1

Answer: 5x²-15x+68

Explanation:

f(x)=x²-3x + 12

g(x) = 5x + 8

(gof)(x)=

g(f(x))=

g(x²-3x + 12)=

5(x²-3x + 12)+8=

5x²-15x + 60+8=5x²-15x+68