Question

answer it step by step plzz

Answer 1

( ab + 1) ^m / b^m. × ( ba -1)^ n)/ b^n )/ ( ab +1)^m / a^m × ( ba -1)^n / a^n

= a^m a^n / b^ m b^n

= a^( m+n)/ b^ ( m+ n)

= ( a/b)^ ( m+n)