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Evaluate 2x+...

Question

Evaluate
$(2 x + y) (2 x + y)$

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Solution

$(2 x + y) (2 x + y)$

$= 2 x (2 x + y) + y (2 x + y)$

$= 4 x^{2} + 2 x y + 2 x y + y^{2}$

$= 4 x^{2} + 4 x y + y^{2}$

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(x + y) (2 x + y) (2 x - y) (x - y)

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