Question based on euclid lemma

[Sandeep_kumar123]

How do I do the question in the attached picture?

 

[Steven G]

This a math help site, not a math homework site. If you tell us where you are stuck and show us what you have done then we can help you solve your problem.

For the record, if you had followed the posting guidelines you would have received help by now.

 

[Sandeep_kumar123]

I am stuck in the second part. I have to prove that gcd(a_m,a_m)= 1. I have made equations but am not able to prove.

 

[Steven G]

I am stuck in the second part. I have to prove that gcd(a_m,a_m)= 1. I have made equations but am not able to prove.

If you tell us where you are stuck and show us what you have done then we can help you solve your problem.