Jawabanmu

2014-06-02T21:09:48+07:00
g (x) = 2x + 2 dan (gof) (x)) = 4x^ + 12x
g (f(x)) = 4x^ + 12x
2 f(x) + 2 = 4x^ + 12x
2 f(x) = 4x^ +12x - 2x
2 f(x) = 4x^ + 10 x
f(x) = 4x^ + 10 x 
              2
f (x) = 2x^+ 5x
2014-06-02T21:11:18+07:00
F(x)=?
g(x)=2x+2
(gof)(x)=4x^2 +12x
f(x)=(2x+2)^2 -6(2x+5)+12
x^2-6x+12