1. The problem statement, all variables and given/known data Find the Laurent expansion of f(z)= 1/(z^3 - 6z^2 + 9z) in the annulus |z-3|>3. 2. Relevant equations none 3. The attempt at a solution I've been spending way too long on this problem.. I can't seem to think of a way to manipulate f to use the geometric series, other than getting something like 1/(1-(-3/z-3)) and arguing |z-3|>3>-3. Unless there's an other, better way to do this problem, could someone just let me know if I'm on the right track?