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प्रश्न
Factorise : 25a2 - 9b2
बेरीज
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उत्तर
25a2 - 9b2
= ( 5a )2 - ( 3b )2
= ( 5a - 3b )( 5a + 3b )
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Method of Factorisation : Difference of Two Squares
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