Jawabanmu

2014-02-17T00:38:58+07:00
F(x) = a (X-X1) (X-X2)
6 = a (0-(-3)) (0-1)
6 = a (3) (-1)
6 = -3a
-2 = a

maka f(x) = -2 (x+3) (x-1)
f (x) = -2 (x²+2x-3)
f(x) = -2x²-4x+6