# How to expand the result of derivative()?

I ran:

```
derivative(acosh(x), x)
```

and the result was:

```
1/(sqrt(x + 1)*sqrt(x - 1))
```

I personally would prefer `1/sqrt(x^2-1)`

as it's an expanded form and I'm wondering how I can get SageMath to show this. I've tried adding `.expand()`

afterwards and that made no difference to the result.