2/3×2log64-1/2×2log16
\(\dfrac{2}{3} *2log 64 - \dfrac{1}{2} *2log 16\)\(\dfrac{2}{3} *2log \ 2^6 - \dfrac{1}{3} *2 \ log \ 2^4\)\(\dfrac{2}{3} *(6)*2log2 - \dfrac{1}{2} *(4)*2log2\)\(4*(1) - 2*(1)\)\(= 2\)