Laurent Series for f(z)=(1+2z)/(z^2+z^3)

[opticaltempest]

Would anyone be willing to check and comment on my work for finding the Laurent series of

$$f(z)=\frac{1+2z}{z^2+z^3}$$ ?

Page 1 - http://img23.imageshack.us/img23/7172/i0001.jpg"

Page 2 - http://img5.imageshack.us/img5/2140/i0002.jpg"

Page 3 - http://img15.imageshack.us/img15/2753/i0003.jpg"

I also displayed the pages below.

Page 1

http://img23.imageshack.us/img23/7172/i0001.jpg


Page 2

http://img5.imageshack.us/img5/2140/i0002.jpg


Page 3

http://img15.imageshack.us/img15/2753/i0003.jpg


Thanks in advance!

 

[HallsofIvy]

It looks good to me!

 

[opticaltempest]

Thanks!