[tex] \sqrt[5]{320 {}^{2} } [/tex]

[tex] \sqrt[5]{ {320}^{2} } \\ = \sqrt[5]{(32 \times 10)^{2} } \\ = \sqrt[5]{( {2}^{5} \times 10)^{2} } \\ = \sqrt[5]{ {2}^{10} \times {10}^{2} } \\ = {2}^{ \frac{10}{5} } \times {10}^{ \frac{2}{5} } \\ = {2}^{2} \times {10}^{ \frac{2}{5} } [/tex]
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