√ , 2 , 2 n , x 3 + y 3 2 3 {\displaystyle \surd ,{\sqrt {2}},{\sqrt[{n}]{2}},{\sqrt[{3}]{\frac {x^{3}+y^{3}}{2}}}}
![{\displaystyle \surd ,{\sqrt {2}},{\sqrt[{n}]{2}},{\sqrt[{3}]{\frac {x^{3}+y^{3}}{2}}}}](https://en.wikipedia.org/api/rest_v1/media/math/render/svg/fb2f06b0dec0a42806cf1378d9e9b64f10574c1d)