|X+1| = |X-3| .tolong bantuin jawab dong

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

Pembahasan :
|x + 1| = |x - 3|
(x + 1)² = (x - 3)²
(x + 1)² - (x - 3)² = 0
(x + 1 + x - 3)(x + 1 - x + 3) = 0
(2x - 2)(4) = 0
8x - 8 = 0
8x = 8
x = 1

Hp : {1}