Jika x penyelesaian dari ²log²log (x-1) = ²log {6-²log(x-1)} maka nilai 2x-5=
Jawab:
13
Penjelasan dengan langkah-langkah:
^2 log (x – 1) = (6 – ^2log (x-1))
misal ^2 log (x-1) =a, maka
a = 6 – a
2a = 6
a = 3
^2log(x-1) = 3
8 = x – 1
x = 9
maka 2x – 5 = 2(9) – 5
= 13