Ubah bentuk nilai mutlak berikut |2x-6| ...

Pembahasan :

Definisi :

|x| = x, jika x ≥ 0

|x| = -x, jika x < 0

x - 1 ≥ 0 => x ≥ 1

2x - 6 ≥ 0 => 2x ≥ 6 => x ≥ 3

x - 1 ≥ 0 => x ≥ 1

2x - 6 ≥ 0 => 2x ≥ 6 => x ≥ 3

jika x ≥ 3

|2x - 6| = 2x - 6

jika x < 3

|2x - 6| = -(2x - 6) = -2x + 6