Question

2x+|3x-8|=-4
caranya gimana?

Answer 1

Verified answer

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

Pembahasan :
2x + |3x - 8| = -4
|3x - 8| = -4 - 2x
(3x - 8)² = (-4 - 2x)²
(3x - 8)² - (-4 - 2x)² = 0
(3x - 8 - 4 - 2x)(3x - 8 + 4 + 2x) = 0
(x - 12)(5x - 4) = 0
x = 12
x = 4/5

Hp = {4/5 , 12}