Jawabanmu

2014-03-03T14:58:03+07:00
F(x²)= -x²+3

f²(x) = (-x+3)² = x²-6x+9

2 f(x)= 2(-x+3)= -2x+6

f(x²)+f²(x)-2f(x)=
-x²+3+x²-6x+9+2x-6=
-4x+6 (C)