Hey!

Got a bit stuck with the series expansion of the following:

I am given a function f(z) = 1/(2z^2+(6z-4i)z-12i)

How do I work out the series expansion of f in the region |z1|<|z|<|z2| ?

I am also unsure as to how you would tell whether it is a Taylor or Laurent series?

Your help would be much appreciated

Thank you