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ingat sifat logaritma penjumlahan : log a + log b = log (ab)
dan log 10 = 1
Sehingga :
Log = 1
Log = log 10
coret yang digaris bawahi :
= 10
6 = 10 (x²-1)
---------------- : 2
3 = 5 (x²-1)
x²- 1 =
x² =
=
x = =
= atau
x = -
silahkan di recheck procesnya sebelum menjadi jawaban akhir
semoga membantu