Diketahui f(x)=3x-7 dan g(x)=2x+7 maka nilai (f ○ g)(2)

f○g(x) = f(g(x))
f○g(x) = 3(2x + 7) - 7
f○g(x) = 6x + 14

f○g(2) = 6(2) + 14
f○g(2) = 12 + 14
f○g(2) = 26

(f•g)(x)=f(g(x))
=3(2x+7)-7
=6x+21-7
=6x+14

(f•g)(2)=6(2)+14
=12+14
=26