$25^{2} - 15^{2}$ =_______

{(25 + 15)}^{2}

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{(25 - 15)}^{2}

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(25 + 15) (25 - 15)

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25 \times 15

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Solution

The correct option is B $(25 + 15) (25 - 15)$
Using the identity, $a^{2} - b^{2} = (a + b) (a - b)$
$25^{2} - 15^{2} = (25 + 15) (25 - 15)$

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