power series representation centered at (a) for the function, determine all values of x where it converges

Question

Find a power series representation centered at (a) for the function and determine all values of x where the power series converge

(x+2)^2 / (5-x) centered at a=-2

 

I don't understand how to do this.

Please show steps and try to explain. 

Answer 1

 

Apply formula :