Power series problem

[promitheus]

Hi, initially drafted this saying I had no idea how to complete this problem. I think I now have a solution. Would love to get some feedback as well as if there is an alternative method.

Many thanks.




EDIT: Resized images. These seem to zoom in better when you click them.

 

[stapel]

Hi, initially drafted this saying I had no idea how to complete this problem. I think I now have a solution. Would love to get some feedback as well as if there is an alternative method.

Many thanks.


View attachment 9388View attachment 9389

I'm sorry, but your images are too small for me to read. Kindly please reply with clarification. Thank you!

 

[promitheus]

Sorry, I should've checked this earlier. I'll try again.