Question

show that = ( x +y) ( X + y ) = x²+ 2xy + y²


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Answer 1

$(x + y)(x + y)$

$= x(x + y) + y(x + y)$

$= {x}^{2} + xy + xy + {y}^{2}$

$= {x}^{2} + 2xy + {y}^{2}$

Therefore,

$(x + y)(x + y) = {x}^{2} + 2xy + {y}^{2}$

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Answer 2

Refer to the attached image for the answer.....