Question

mn+5-2 , mn+3
Add and subtract

please tell me the answer...​

Answer 1

Answer:

Part(i)

Add

=m−n+m+n=2m

Subtract

=m−n−m−n=−2n

Part(ii)

Add

=mn+5−2+mn+3=2mn+6

Subtract

=mn+5−2−mn−3=0