3log (5x+1)=9log(5(x+1)pangkat2)
Matematika
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Pertanyaan
3log (5x+1)=9log(5(x+1)pangkat2)
1 Jawaban
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1. Jawaban Anonyme
LogAritMa
³log (5x + 1) = (3²)'log (5(x + 1)²)
³log (5x + 1) = 1//2 . ³log (5(x + 1)²)
5x + 1 = (5(x + 1)²)^1/2
5x + 1 = √5 (x + 1)
(5x + 1)² = (√5 (x + 1))²
25x² + 10x + 1 = 5x² + 10x + 5
20x² = 4
x² = 4/20
x = √(1/5)
x = 1/5 √5