Question

How to evaluate 103 x 97 using identities

Answer 1

103*97

(a2-b2)=(a+b)(a-b)

Answer 2

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➪ 103 × 97 = (100 + 3) (100 −3 )

➪ Using, a2 − b 2 = (a + b) (a − b)

➪ = (100)2 − (3)2

➪ = 10000−9

➪ = 9991