Expand as using partial fractions.
Now expand as a power series in z+ 5. You can do that, for example, by writing it as and recognize that as the sum of a geometric series: . The Laurent series is
Expand as using partial fractions.
Now expand as a power series in z+ 5. You can do that, for example, by writing it as and recognize that as the sum of a geometric series: . The Laurent series is