Question

calcule fog e gof, dadas: f(x)= 4x + 2 e g(x)= 7x - 4. Preciso de ajuda por gentileza!

Answer 1

f(g(x))=4.(7x-4)+2
f(g(x))=28x-16+2
f(g(x))=28x-14

g(f(x))=7.(4x+2)-4
g(f(x))=28x+14-4
g(f(x))=28x+10

Answer 2

Fog = F ( (g) x)
gof = G (( (F) x)

F ( 7x - 4 ) =
4 ( 7x - 4 ) + 2
28x - 16 + 2
28x - 14

G ( 4x +2 ) =
7 ( 4x +2 ) - 4
28x + 14 - 4
28x + 10