Jawabanmu

2014-09-08T17:48:58+07:00
(2x - 3)(3x + 4) = 6x^2 - x - 12
Jadi a = 6, b = -1, c = -12
a + b + c = 6 -1 - 12 = -7
2014-09-08T17:52:31+07:00
6x pangkat 2 + 8x - 9x - 12
= 6x pangkat 2 - x - 12
jadi nilai a = 6         b= -1          c= -12
maka nilai a + b + c= 6 - 1 - 12
                                =-7