\nthroot{10}{\frac{x^{10}}{2^{70}}}

\nthroot{9}{\frac{x^{54}}{2^{90}}}

\nthroot{9}{\frac{x^{81}}{5^{81}}}

\nthroot{8}{\frac{x^{80}}{2^{72}}}

\nthroot{10}{\frac{x^{30}}{y^{30}}}

\nthroot{10}{\frac{7^{10}}{y^{70}}}

\nthroot{6}{\frac{3^{42}}{y^{24}}}

\nthroot{3}{\frac{x^{30}}{2^{18}}}

\sqrt{\frac{x^{20}}{y^{4}}}

\nthroot{8}{\frac{3^{48}}{y^{16}}}

\nthroot{5}{\frac{7^{25}}{5^{40}}}

\nthroot{9}{\frac{7^{54}}{2^{90}}}

\nthroot{3}{\frac{7^{30}}{y^{30}}}

\nthroot{9}{\frac{7^{54}}{y^{18}}}

\nthroot{4}{\frac{x^{16}}{2^{32}}}

\nthroot{9}{\frac{x^{9}}{y^{72}}}

\nthroot{3}{\frac{3^{9}}{5^{6}}}

\nthroot{10}{\frac{3^{80}}{2^{50}}}

\nthroot{7}{\frac{3^{70}}{y^{21}}}

\nthroot{3}{\frac{7^{12}}{5^{30}}}

\nthroot{8}{\frac{x^{48}}{2^{16}}}

\nthroot{3}{\frac{7^{9}}{2^{27}}}

\nthroot{5}{\frac{3^{5}}{y^{30}}}

\nthroot{4}{\frac{7^{20}}{2^{32}}}