4 |2x+3| -11 = -6 Jawab dgn caranya ya

Mapel : Matematika
Kelas : X SMA
Materi : Persamaan Nilai Mutlak

Pembahasan :
4|2x + 3| - 11 = -6
4|2x + 3| = 5
|2x + 3| = 5/4
(2x + 3)² = (5/4)²
(2x + 3)² - (5/4)² = 0
(2x + 3 + 5/4)(2x + 3 - 5/4) = 0
(2x + 17/4)(2x + 7/4) = 0
x = - 17/8
x = - 7/8

Hp : {-17/8 , -7/8}