nth root of `x`

is `x^(1/n)`

, so you can do `9**(1/2)`

to find the 2nd root of 9, for example. In general, you can compute the nth root of x as:

```
x**(1/n)
```

**Note**: In Python 2, you had to do `1/float(n)`

or `1.0/n`

so that the result would be a `float`

rather than an `int`

. For more details, see Why does Python give the “wrong” answer for square root?