[tex]9.\\\sqrt[3]{(-64)^{-1}} = \sqrt[3]{(-\frac{1}{64})}=\sqrt[3]{(-\frac{1}{4})^{3}} = -\frac{1}{4}\\\\Odp. \ B.[/tex]
[tex]10.\\\sqrt[3]{(-27)^{-1}}\cdot81^{\frac{3}{4}} = \sqrt[3]{(-\frac{1}{27})}\cdot(3^{4})^{\frac{3}{4}} = \sqrt[3]{(-\frac{1}{3})^{3}}\cdot3^{3} = -\frac{1}{3}\cdot27 = -9\\\\Odp. \ B.[/tex]
[tex]11.\\3log_{2}16}-log_{3}81 = 3log_{2}2^{4}-log_{3}3^{4} = 3\cdot4-4 = 12-4 = 8\\\\Odp. \ B.[/tex]
[tex]12.\\log_{3}(log25+log40) = log_{3}log(25\cdot40) = log_{3}log1000 = log_{3}3 = 1\\\\Odp. \ D.[/tex]
