Jawabanmu

2015-12-29T15:40:45+07:00
|3+2x| < |4-x|
(3+2x)² < (4-x)²
9+12x+4x² < 16-8x+x²
3x²+20x-7 < 0

(3x-1)(x+7) = 0
3x-1 = 0 atau x+7 = 0
x = 1/3 atau x = -7

HP = {x|-7<x<1/3}