I want to simply $\frac{H^{\xi}\left(\frac{H}{H_0}\right)^{-\xi}}{H_0}$ this term to be $H_0^{\xi-1}$,
I run the code FullSimplify and Cancel but they do not work
Cancel[((H^\[Xi]) ((H/H0)^-\[Xi]) )/H0]
FullSimplify[((H^\[Xi]) ((H/H0)^-\[Xi]) )/H0]
How should I do that?