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Materi : Persamaan Nilai Mutlak
Pembahasan :
|3x - 1| = x - 2
(3x - 1)² = (x - 2)²
(3x - 1)² - (x - 2)² = 0
(3x - 1 + x - 2)(3x - 1 - x + 2) = 0
(4x - 3)(2x + 1) = 0
x = 3/4 atau x = -1/2
Semua solusi jika disubstitusikan tidak memenuhi semua
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