IDENTITY EXAMPLE ANY 2 x^2-y^2=(x+y) (x-y)
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Let us prove here, few identities.
(x + y)2 = x2 + y2 + 2xy
L.H.S. = (x + y)2
L.H.S. = (x + y) (x + y)
By multiplying each term, we get,
L.H.S = x2 + xy + xy + y2
L.H.S. = x2 + 2xy + y2
L.H.S. = R.H.S
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