Ответ:
\(\sqrt[6]{a}:\sqrt[8]{a^{-5}}=a^{\frac16}:a^{-\frac58}=a^{\frac16-\left(-\frac58\right)}\).
\(\frac16+\frac58=\frac4{24}+\frac{15}{24}=\frac{19}{24}\).
Ответ: \(a^{\frac{19}{24}}\)
\(\sqrt[6]{a}:\sqrt[8]{a^{-5}}=a^{\frac16}:a^{-\frac58}=a^{\frac16-\left(-\frac58\right)}\).
\(\frac16+\frac58=\frac4{24}+\frac{15}{24}=\frac{19}{24}\).
Ответ: \(a^{\frac{19}{24}}\)