(log21-log210)(log16+log1,6)=

Bab      : Pangkat akar dan Logaritma
Mapel   : Matematika
Kelas    : X SMA

Sifat Logaritma
log a - log b = log(a/b)
log a + log b = log (a.b)

(log 21 - log 210)(log 16 + log 1,6)
= [log(21/210)][log(16 x 1,6)]
= log 1/10 . log 25,6
= -1 . log 25,6