How do you write 14^(2/5) in radical notation?

${14}^{\frac{2}{5}} = {\left({14}^{2}\right)}^{\frac{1}{5}} = {196}^{\frac{1}{5}} = {5}^{t h} \text{root of } 196$
Now, ${5}^{t h} \text{root of a number}$ is , in radical sign, written as root(5)("the number)".
Hence, ${14}^{\frac{2}{5}} = \sqrt[5]{196}$.