Ответ:

  1. \(\sqrt{1.3}=1.3^{\frac12}\).
  2. \(\sqrt[7]{\frac35}=\left(\frac35\right)^{\frac17}\).
  3. \(\sqrt[4]{\frac23}=\left(\frac23\right)^{\frac14}\).
  4. \(\sqrt[3]{4.3}=4.3^{\frac13}\).

Ответ: а) \(1.3^{\frac12}\); б) \(\left(\frac35\right)^{\frac17}\); в) \(\left(\frac23\right)^{\frac14}\); г) \(4.3^{\frac13}\).