Dik. F(x) = 4² + 3 G(x) = x + 2 Dut. A. (Fog) (x) B. (Gof) (x) C. (Gof) (2) Jawab dengan benar kak,bang,pak,buk

A. (f o g)(x) = f ( g(x) ) 
f (x+2)
= 4(x+2)²+3
= 4(x²+4x+4) +3
= 4x²+16x+16+3
= 4x²+16x+19

B. (g o f) (x) = g (f(x))
= g (4x²+3)
= 4x²+3+2
= 4x²+5
C. (g o f) (2)
= g (f(2))
= g (4(2)² +3)
= 4(2)²+3+2
= 4.4+5
= 21