²log akar 2 +²log 2akar 2 - ²log 16 akar 3

^2log√2 + ^2log2√2 - ^2log16^3 =
^2log√2 + ^log2√2 - ^2log2^12 =
(^2log(√2×2√2) - 12 =
^2log4 - 12 =
2 - 12 =
-10

#semoga membantu....