Jika 3log 5=m dan 3log 2=n, maka 2log 45 adalah?

3 log 5=m,3 log 2= n

2log45=log 45/log 2
=3log 3.3.5/3log2
= (3 log 3+3 log 3+3log 5)/n
=(1+1+m)/n
=(2+m)/n