Tentukan akar dari 5|2x-1| +4=11
Matematika
rizkianiamalia
Pertanyaan
Tentukan akar dari 5|2x-1| +4=11
2 Jawaban
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1. Jawaban Darksimple
5 |2x - 1| + 4 = 11
5 |2x - 1| = 11 - 4
5 |2x - 1| = 7
|2x - 1| = 7/5
|2x - 1| = 7/5 atau -7/5
|2x - 1| = 7/5
2x = 7/5 + 1
2x = 7/5 + 5/5
2x = 12/5
x = 12/5 ÷ 2/1
x = 12/5 × 1/2
x = 12/40 = 6/5
|2x - 1| = -7/5
2x = -7/5 + 1
2x = -7/5 + 5/5
2x = -2/5
x = -2/5 ÷ 2/1
x = -2/5 × 1/2
x = -2/10 = -1/5 -
2. Jawaban Anonyme
5|2x - 1| + 4 = 11
|2x - 1| = (11 - 4)/5
|2x - 1| = 7/5
•
2x - 1 = 7/5
2x = 1 + 7/5
2x = 12/5
x = 6/5
•
2x - 1 = -7/5
2x = 1 - 7/5
2x = -2/5
x = -1/5
HP = {-1/5 , 6/5}