f(x) = 2x+1/x (f•g)(x) = x-3 g(3)=..

(fog)(x) = 2x + 1/x
f(g(x)) = 2x + 1/x
g(x) - 3 = 2x + 1/x
g(x) = 2x + 1/x + 3
g(x) = (2x² + 1 + 3x)/x

g(3) = (2.3² + 1 + 3.3)/3
g(3) = (18 + 1 + 9)/3
g(3) = 28/3 = 9,33

maaf kalau salah