√^6 log 9 x log 36-49 log 1/7 adalah

(6^½)^log 9 . log 36 - (7²)^log 7^-1
= 2 . ^6log 9 . log 36 - (-1/2) ^7log 7
= 2 . log 36 . ^6log 9 + ½
= 2 . log 6^2 . ^6log 9 + ½
= (2)(2) log 9 + ½
= 4 log 9 + ½