a.5 log 10 - 5 log 6 +5 log18

Logaritma
Kelas X

⁵log 10 - ⁵log 6 + ⁵log 18
= ⁵log (10 × 18 / 6)
= ⁵log 30
atau kalau mau lebih sederhana
= ⁵log (5 × 6)
= ⁵log 5 + ⁵log 6
= 1 + ⁵log 6