Jawabanmu

2014-05-29T17:47:00+07:00
(g o f ) = 12X^2 + 3X +4
g ( f(x) ) =12X^2 + 3X +4
3 ( f (x) ) - 2 =12X^2 + 3X +4
f (x) =12X^2 + 3X +6 dibagi 3
f (x) =4x^2 + x +2
f(-1) =4 -1+2=5