Question

| x - 1 | + 2x = 5

Tentukan hasil persamaan mutlak satu variabel diatas

Answer 1

Verified answer

Mapel : Matematika
Kelas : X SMA
Bab : Mutlak

Pembahasan :
|x - 1| + 2x = 5
|x - 1| = 5 - 2x
(x - 1)² = (5 - 2x)²
(x - 1)² - (5 - 2x)² = 0
(3x - 6)(-x + 4) = 0
x = 2
x = 4 (TM)

Hp : {2}