Question

हिंदी
$9a { }^{2} - 25 b {}^{2}$
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Answer 1

☘️Solution:-

$9 {a}^{2} - 25 {b}^{2} \\ {3}^{2} {a}^{2} - {5}^{2} {b}^{2} \\ {(3a)}^{2} - {(5b)}^{2} \\ (3a + 5b)(3a - 5b) \\ 9 {a}^{2} - 15ab + 15ab - 25 {b}^{2}$

• Value ☞ $\red{\bold{(3a+5b)(3a-5b)}}$

→ a²-b² = (a+b)(a-b)

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