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Expression Formation

Find the prod...

Question

Find the product:
$(5 x y + 2) (5 x y - 2)$

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Solution

$(5 x y + 2) (5 x y - 2)$
$= (5 x y)^{2} - 2^{2}$
$= 25 x^{2} y^{2} - 4$ .

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