Q: Using Cauchy’s integral formula, compute the integral of g(z) over the circle of radius 3 centred at the origin, the contour integral being taken counterclockwise.

g(z) =z^3 + z^2 − 5/z − 2

i cant wrap my head around this formula or how to even begin solving it. all other examples had two 'poles' rather tha just (z-2)

any help will be much appreciated.