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Mapel : Matematika Wajib (Kelas X SMA)Materi : Nilai Mutlak
Indikator : Mencari HP dalam suatu persamaan nilai mutlak
Langkah Penyelesaian :
|x - 2| - |x + 2| = 0
|x - 2| = |x + 2|
- Kuadratkan kedua ruas :
(x - 2)² = (x + 2)²
x² - 4x + 4 = x² + 4x + 4
x² - x² - 4x - 4x = 4 - 4
- 8x = 0
x = 0