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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.