Nilai 4log8 + 5log125 - 3log81 adalah

4log8 + 5log125 - 3log 81 
= 2^2log2^3 + 5log 5^3 - 3 log 3^4
= 3/2 ×2log 2 + 3×5log5 - 4×3log3
= 3/2+3-4
=3/2-1 = 1/2