Using TI-30x calculator to find square root

https://www.youtube.com/watch?v=yeFxCoVimlU
Button pushes: 2nd, x2, 2, 5, = And you should get 5. The square root of 25 is 5.
Button pushes: 2nd, x2, 1, 0, = And you should get 3.16227766017

The square root of 10 is 3.16227766017