Q : 6          Using identities, evaluate.

                  (iv) 998^2

Answers (1)

Here we will the identity :

                                                       998^2=(1000 - 2)^2 = 1000^2 - 2(1000)(2) + 2^2

or                                                                                              = 1000000 - 4000+ 4

or                                                                                              = 996004

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