Laurent series example

I have been trying to understand Laurent series expansion in complex analysis and I need someone’s confirmation that what I’m doing is right.

Expand the function $f(z) = frac{1}{5-2(z+frac{1}{z})}$ on a disk $frac{1}{2} < |z| < 2$.

My approach was to break this fraction onto smaller parts using partial fractions and I got the following:
$frac{-z}{(z-2)(z+2)} = frac{-1}{2z-4}-frac{1}{2z+4}$

Next thing I think I should do is find Laurent expansion for first fraction on $frac{1}{2} < |z|$ and then $|z| <2$. After that I would do same for second fraction and finally I would have two expansions of this function, one on $frac{1}{2} < |z|$ and second one on $|z| <2$.

Is this the right approach? This has been confusing me a lot lately. Thanks for any tips in advance.