Question

Simplify:
(m-2n) (m+n-1) - (2m+n ) (m-n+1) + (m to the power 2) + (n to the power 2)

Answer 1

Step-by-step explanation:

a^m.a^n=a^mn

a^(m+n)=a^mn

m+n=mn

Let it be equation 1

Now

m(n-2)+n(m-2)

=mn-2m+mn-2n

=2mn-2(m+n)

And from equation 1 (m+n)=mn

=2mn-2mn

=0

Answer 2

Answer:

-3m+n

Step-by-step explanation:

see in pic