Factorize:
$25 a^{2} - 9 b^{2}$ .

(5 a + b) (5 a - 3 b)

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(a + 3 b) (5 a - 3 b)

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(5 a + 3 b) (5 a - 3 b)

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(5 a - 3 b) (5 a + 3 b)

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Solution

The correct option is C $(5 a + 3 b) (5 a - 3 b)$
$25 a^{2} - 9 b^{2}$
$= (5 a)^{2} - (3 b)^{2}$
$= (5 a + 3 b) (5 a - 3 b)$

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