Question

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Answer 1

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

so it is the last option