2 log 16+4.3log4.2log3+2log1per8

2log 16 + 4.3log4.2log 3 + 2 log 1/8
= 2log 2⁸ + 4.3log 2². 2log 3 + 2log 2⁻³
= 8 2log 2 + 2.4.3log 2 .2log 3 - 3.2log 2
= 8(1) + 8 3log 3 - 3
= 8 + 8 - 3
= 13

catatan
a log b² = 2.alog b
a log a  = 1
a log b . b log a = a log a = 1