solve the identity (x+y)^2
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Step-by-step explanation:
(x+y)^2 = (x+y)(x+y)
= x(x+y) + y(x+y)
= x^2 + xy + xy + y^2
= x^2 + 2xy + y^2
Answered by
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Answer:
(x + y)² = x² + y² + 2xy
Step-by-step explanation:
Proof -
(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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