Question

Please answer. See attachment.

Answer 1

=a^m. a^n=a^mn
=a^m+n=a^mn
=m+n=mn ------(1)
Now..

m(n-2)+n(m-2)
=mn-2m+mn-2n
=2mn -2(m+n)
=2mn-2mn. from---(1)
=0
answer :(2) 0