dik:3log5=x dan 3log 7 =4 mka nilai 3log 7akar 5=.....

3log7√5
= 3log(7 x √5)
= 3log7 + 3log√5
= 3log7 + 3log5^1/2
= 3log7 + 1/2. 3log5
= y + 1/2 x