Ответ:
- \(2^{4/5}\cdot2^{11/5}=2^{4/5+11/5}=2^3=8\).
- \(5^{2/7}\cdot5^{5/7}=5^{2/7+5/7}=5^1=5\).
- \(9^{2/3}:9^{5/6}=9^{2/3-5/6}=9^{-1/6}=\dfrac{1}{\sqrt[6]{9}}=\dfrac{1}{\sqrt{3}}\).
- \(4^{5/3}:4^{1/6}=4^{5/3-1/6}=4^{3/2}=8\).
- \((8^{1/12})^{-4}=8^{-4/12}=8^{-1/3}=\dfrac{1}{2}\).
