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प्रश्न
Factorise completely: a4 - b4
बेरीज
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उत्तर
a4 - b4 = (a2)2 - (b2)2
= (a2 + b2) (a2 - b2)
= (a2 + b2)(a + b)(a - b)
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Factorising Completely
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