If 
then 
We know that,
From formula, (a – b)2 = a2 + b2 – 2ab
……………….(i)
And 
Putting value of 
in equation (i), we get,
(6)2 = 
= 36+ 2= 38.
14
If then
We know that,
From formula, (a – b)2 = a2 + b2 – 2ab
……………….(i)
And
Putting value of in equation (i), we get,
(6)2 =
= 36+ 2= 38.