Jawabanmu

2014-08-22T17:36:44+07:00
2 log 5 x log 16 x log 7
= log 5/log 2 x log 2⁴ x log 7
= log 5 xlog 7 x 4.log 2 - log 2
log 12 x 4 log 2/log 2
log 12 x 4 / log 12⁴