minta bantuannya ya temanpleasee..

Log 15^2/3
=2/3.log 3.5
=⅔. Log 3.10/2
=⅔(log 3 + log 10 - log 2)
=⅔(b+1-a)
=⅔(1-a+b)
No. 19
³log 56/³log14
=³log 2³. 7 / ³log 2.7
=3.³log2 + ³log 7 per ³log2 + ³log7
=3.1/a + b per 1/a + b
=3+ab/a : 1+ab /a
=3+ab/a. a/ab+1
=ab+3 / ab+1