Jawabanmu

2014-01-24T15:54:37+07:00
2x^2 - 5x -12 = (2x + 3)(x - 4)
x1 = 2x + 3 = 0
       2x = -3
       x = -3/2

X2 = x - 4 = 0
       x = 4
1 4 1