Persamaan nilai mutlak |×-2|=|2×+6|
Matematika
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Pertanyaan
Persamaan nilai mutlak |×-2|=|2×+6|
2 Jawaban
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1. Jawaban dnnyz07
Mutlak
|x - 2| = |2x + 6|
(x - 2)² = (2x + 6)²
(x - 2)² - (2x + 6)² = 0
(x - 2 + 2x + 6)(x - 2 - 2x - 6) = 0
(3x + 4)( -x - 8) = 0
x = -4/3
x = -8 -
2. Jawaban ErikCatosLawijaya
Mapel : Matematika
Kelas : X SMA
Materi : Persamaan Nilai Mutlak
Pembahasan :
|x - 2| = |2x + 6|
x - 2 = 2x + 6
2x - x = -2 - 6
x = -8
x - 2 = -(2x + 6)
x - 2 = -2x - 6
2x + x = -6 + 2
3x = -4
x = -4/3
Hp : {-8 , -4/3}