Nilai 5log125 + 4log9 x 3log64

5log 125 + 4log 9 × 3log 64
= 5log 5^3 + log 9/log 4 × log 64/log 3
= 3 + log 3^2/log 2^2 × log 2^6/log 3
= 3 + 2.log 3/2.log 2 × 6.log 2/log 3
= 3 + 2/2×6/1
= 3 +6
= 9