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First Find the value of LHS

Using Identity (a + b) ² = a² + 2ab + b² for finding the value of

In the given expression a =

On substituting these values in the above identity, we get

⇒  ………………………………………………..(i)

On Adding  in eqn (i), we get

First Find the value of RHS

Using Identity (a - b) ² = a² - 2ab + b² for finding the value of

In the given expression a =

On substituting these values in the above identity, we get

………………………………………………..(i)

Therefore from eqn (i) and equ (ii) we found that LHS = RHS