Question

. Using suitable identity , evaluate the following :

293 307​

Answer 1

293 × 307 293 = 300 −7307 = 300 +7293 ×307 = (300−7)(300+7)from the identity (a+b)(a−b) = a2−b2(300−7)(300+7) = (300)2−(7)2= 90000−49=89951

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