jika long2=x dan long 3=y maka long 18

log 2 = x, log 3 =y

log 18 = log 2x3x3
= log 2 + log 3 + log 3
= x + y + y
= x + 2y

Kelas : X SMA
Mapel : Matematika Wajib
Bab : Eksponen dan Logaritma
Indikator : Sifat - Sifat Logaritma

Langkah Penyelesaian dan Jawaban :
log a + log b = log ab
log a - log b = log (a/b)
log aⁿ = n log a
ᵃlog a = 1

log 2 = x
log 3 = y

log 18 = log (9 x 2)
log 18 = log 9 + log 2
log 18 = log 3² + log 2
log 18 = 2 log 3 + log 2
log 18 = 2y + x
log 18 = x + 2y