tentukan himpunan | 3×+2|=5

|3x+2| = 5
(3x+2)² = 5²
[(3x+2)]² - [5]² = 0
[(3x+2) + 5 ] [(3x+2) - 5 ] = 0
[3x+7] [3x-3] = 0

3x+7=0
3x= -7
x= -7 (dibaca min 7 per 3)
—
3

3x-3 = 0
3x=3
x= 3
— = 1
3

Hp :{-7/3 , 1}