Respuesta :

[tex] \sqrt[5]{x} = x^{\frac{1}{5}}\\ \\ \sqrt[5]{x} * \sqrt[5]{x} * \sqrt[5]{x} * \sqrt[5]{x} =\\ x^{\frac{1}{5}}*x^{\frac{1}{5}}*x^{\frac{1}{5}}*x^{\frac{1}{5}}=\\ x^{\frac{4}{5}}[/tex]

so it is the last option