Jawabanmu

2014-06-13T15:57:50+07:00
(x + 2) = 0
x = -2

F(x)=2x³-3x²+(k-5)x+12 =-14
F(-2)=2(-2)³-3(-2)²+(k-5)(-2)+12 = -14
F (-2) = 2. (-8) - 3.4 + -2k +10 +12 + 14 = 0
         = -16 - 12 + 36 - 2k = 0
         = -28 + 36 = 2k
         = 8 = 2k
         = k = 4

Semoga membantu
2014-06-13T16:01:56+07:00
(x+2)= 0
x = -2

f(x) = 2(-2)^3 - 3(-2)^2 + (k-5)-2 +12
= -16-12-2k+10+12
=-6-2k
2k=-6
k=-3