Adaa yang tau gak 2 soal itu???? Jawab pleaseee :((

5. f(x) = 2x+1
(gof) (x) = x²+3x+1
g(2) =................?

(gof) (x) = x²+3x+1
g[(f(x)] = x²+3x+1
g (2x+1) = x²+3x+1
misal, 2x+1 = y
x =
g (y) = ( )² + 3 ( ) +1
g (y) = +  +1
g (y) = +1
g (y) =
g (x) =
jadi, g(2) = =

tolong di cek ulang hasil hitungannya yach......