Chromey Calculator

https://chrome.google.com/extensions/detail/acgimceffoceigocablmjdpebeodphgc

square root of 91 =
9.53939201

cubic root of 91 =
4.4979414452754147963915607943073573296834506265033082320099...

4th root of 91 =
3.08859062

5th root of =
0

5th root of 91 =
2.46495093