Tentukan penyelesaian persamaan berikut 1) 6 |2x-1| - 2 = 10 2) |4-x| - |x-3| =0
Matematika
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Pertanyaan
Tentukan penyelesaian persamaan berikut
1) 6 |2x-1| - 2 = 10
2) |4-x| - |x-3| =0
1) 6 |2x-1| - 2 = 10
2) |4-x| - |x-3| =0
1 Jawaban
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1. Jawaban Anonyme
Bab Nilai Mutlak
Matematika SMA Kelas X
1] 6 | 2x - 1| - 2 = 10
6 | 2x - 1| = 10 + 2
|2x - 1| = 12/6
|2x - 1| = 2
2x - 1 = 2
2x = 2 + 1
x = 3/2
2x - 1 = - 2
2x = - 2 + 1
x = -1/2
HP = { -1/2, 3/2 }
2] |4 - x| - |x - 3| = 0
|4 - x| = |x - 3|
4 - x = x - 3
-x - x = -3 - 4
-2x = -7
x = 7/2
4 - x = - x + 3
-x + x = 3 - 4
tidak ada penyelesaian
HP = {7/2}