\nthroot{20}{7^{69}}

\nthroot{3}{3^{10}}

\nthroot{9}{x^{16}}

\nthroot{4}{3^{23}}

\nthroot{9}{7^{48}}

\nthroot{4}{7^{7}}

\nthroot{17}{7^{71}}

\nthroot{8}{y^{30}}

\nthroot{20}{7^{41}}

\nthroot{19}{3^{58}}

\nthroot{12}{7^{62}}

\nthroot{19}{y^{37}}

\nthroot{18}{7^{47}}

\nthroot{10}{3^{33}}

\nthroot{6}{x^{22}}

\nthroot{4}{y^{19}}

\nthroot{3}{x^{15}}

\nthroot{8}{3^{9}}

\nthroot{4}{3^{13}}

\nthroot{11}{3^{35}}

\nthroot{16}{7^{84}}

\nthroot{10}{x^{43}}

\nthroot{5}{y^{5}}

\nthroot{18}{x^{95}}