Q. 5 E5.0( 3 Votes )

Evaluate the following by using the identities:

9982

Answer :

9982 = (1000 – 2)2


We know that


(a– b)2 = a2 + b2 – 2a×b


(1000 – 2)2 = ((1000)2 + (2)2 – 2×1000×2)


(1000 – 2)2 = 1000000 + 4 – 4000


9982 = 996004


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