Question

prove this identity (a square+b square)​

Answer 1

a2 + b2 = (a+b)2 - 2ab



But there is no since identity like this....
(a+b)2 = a2+b2+2ab

a2 - b2 = (a-b) (a+b)




Hope it helps you.......
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Answer 2

Answer:

we know that (A +B) square= A square+B square+2ab

then

A square +B square =(A+B) square -2ab

Hope it helps you..