Question

If m # n and (m + n)-1 (m-' + n-1) = m'n';
show that : x + y + 2 = 0.​

Answer 1

Step-by-step explanation:

(m+n)−1(m−1+n−1)=mxny

L.H.S.

=m+n1(m1+n1)

=(m+n1)(nmn+m)

=nm1=m−1n−1

R.H.S =mxny

⇒x=−1&y=1

⇒x+y+2=(−1)+(−1)+2=0