Question

what should be added to algebraic expression to make it a perfect square and 49 x square - 74 X Y + 25 y^2​

Answer 1

Answer:

$We\: must\: add \: \pink {4xy} \: to \:the \\expression \: to \:make \: it \: perfect \:square$

Step-by-step explanation:

$Given \: algebraic \: expression :\\49x^{2} - 74xy + 25y^{2}$

$= (7x)^{2} - 2\times 7x \times 5y + (5y)^{2} -4xy$

$= (7x-5y)^{2} - 4xy$

Therefore.,

$We\: must\: add \: \pink {4xy} \: to \:the \\expression \: to \:make \: it \: perfect \:square$

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