Magree5321
09.01.2021 •
Mathematics
If mn = 16 and m2 + n2 = 68. then
(m + n) 2 equals
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Ответ:
So, the value of mn is 72.
Step-by-step explanation:
Given, m−n=16 and m
2
+n
2
=400
We know that, (m−n)
2
=m
2
+n
2
−2mn ... (i)
By putting the given values in equation (i),
(16)
2
=400−2mn
256=400—2mn
256−400=−2mn
—144=−2mn
72=mn
So, the value of mn is 72.
Ответ:
1/2
Step-by-step explanation: