\nthroot{13}{y^{29}}

\nthroot{16}{y^{43}}

\nthroot{6}{y^{30}}

\nthroot{20}{3^{108}}

\nthroot{15}{7^{18}}

\nthroot{5}{y^{27}}

\nthroot{15}{x^{41}}

\nthroot{16}{7^{78}}

\nthroot{20}{7^{38}}

\nthroot{10}{y^{44}}

\nthroot{12}{y^{40}}

\nthroot{10}{y^{57}}

\nthroot{20}{x^{112}}

\nthroot{17}{x^{20}}

\nthroot{11}{7^{63}}

\nthroot{14}{x^{63}}

\nthroot{19}{y^{63}}

\nthroot{5}{7^{24}}

\nthroot{6}{y^{12}}

\nthroot{5}{y^{28}}

\nthroot{19}{x^{43}}

\nthroot{10}{y^{31}}

\nthroot{10}{3^{50}}

\nthroot{16}{x^{75}}