Question

1/1+x^a-b + 1/1+x^b-a

Answer 1

Here is your answer brother

1/(1+x^(a-b))+ 1/(1+x^(b-a))

= 1/(1+x^(a-b)) + 1/(1+x^-(a-b))

=1/(1+x^(a-b)) + (x^(a-b))/(1+x^(a-b))
Now LCM

=(1+x^(a-b))/(1+x^(a-b))

=1 Ans

Attached file also here!
Hope it's helpful for you ☺