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प्रश्न
Factorise completely:
a2 − 16b2 − 2a − 8b
बेरीज
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उत्तर
a2 − 16b2 − 2a − 8b
Using the formula
(x2 − y2) = (x + y)(x − y)
= (a2 − 16b2) − (2a + 8b)
= (a + 4b)(a − 4b) − 2(a + 4b)
= (a + 4b)(a − 4b − 2)
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Factorising Completely
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