Question

sister the answer is
ANSWER

This is derived by the formula of

(a+b)
2
=a
2
+b
2
+2ab&(a−b)
2
=a
2
+b
2
−2ab

Then,

a
2
+b
2
=(a+b)
2
−2ab

a
2
+b
2
=(a−b)
2
−2ab

Hence, the answer is
$- 2ab$
​

Answer 1

Answer:

ha.... good evening...nice relationship..