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प्रश्न
Factorise completely: a2 - 16b2 - 2a - 8b
बेरीज
उत्तर
a2 - 16b2 - 2a - 8b
= (a)2 - (4b)2 - 2(a + 4b)
= (a + 4b)(a - 4b) - 2(a + 4b)
= (a + 4b)(a - 4b - 2)
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Factorising Completely
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