Seleseikan pertidaksamaan berikut |6x-7|= |3+2x|
Matematika
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Pertanyaan
Seleseikan pertidaksamaan berikut
|6x-7|= |3+2x|
|6x-7|= |3+2x|
1 Jawaban
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1. Jawaban Anonyme
Bab Nilai Mutlak
Matematika SMA Kelas X
|6x - 7| = |3 + 2x|
(6x - 7)² = (3 + 2x)²
(6x - 7)² - (3 + 2x)² = 0
(6x - 7 + 3 + 2x) (6x - 7 - 3 - 2x) = 0
(8x - 4) (4x - 10) = 0
8x - 4 = 0
8x = 4
x = 4/8
x = 1/2
4x - 10 = 0
4x = 10
x = 10/4
x = 5/2