3 log 9 x 5 log 9. =

Bentuk sederhana

'3log 9 x '5log 9.
Gunakan sifat komutatif

'5log 9× '3log 9
= '5log (3^2)× '3log 9
=2 × '5log3 × '3log9
= 2× '5log9
= 2× '5log (3^2)
= 4× '5log3