Question

mn if m+n=8 and, m-n=2.

Answer 1

Your Answer ↓↓↓↓↓.

Given :- M + n = 8 
             M - n = 2

To find :- Mn

Solution :- M = 8 - n  --------------------  1.

then , 

M-n = 2 

8 - n - n = 2 

-2n = 2 - 8

-2n = -6

n = 3 

then ,
 M = 8-3
= 5 
then,

Mn = 5 *3 
Mn = 15 .

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Answer 2

adding both we get(m+n+m-n)=8+2
2m=10
m=5
substitute in m+n=8
5+n=8
n=8-5=3
therefore m=5 & n=3