Tentukan himpunan penyelesaian dari 3 |2x-3|^2 +5 |2x-3| -2 = 0 PAKAI CARA YAA
3|2x – 3|² + 5|2x – 3| – 2 = 0
misal n = |2x – 3|
3n² + 5n – 2 = 0
3n² + 6n – n – 2 = 0
3n(n + 2) – 1(n + 2) = 0
(n + 2)(3n – 1) = 0
n + 2 = 0 atau 3n – 1 = 0
n = – 2 atau n = 1/3
|2x – 3| = -2 → x = ∅ (nilai mutlak ≥ 0)
|2x – 3| = 1/3
2x – 3 = ⅓ atau 2x – 3 = -⅓
6x – 9 = 1 atau 6x – 9 = -1
6x = 10 atau 6x = 8
x = 10/6 atau x = 8/6
x = 5/3 atau x = 4/3
x = 1⅔ atau x = 1⅓
HP = {1⅓, 1⅔}
Semoga membantu ^_^