Evaluate 98*107
using identity
Answers
Answered by
10
(100-2)(100+7)
10000+700-200-14
10000+500-14
10500-14
10486
Answered by
3
(100-2) (100+7)
(x+a) (x+b) =x×x+x(a+b) +ab
100×100+100((-2) +7) +-2×7
10000+100(5) -14
10000+500-14
9500-14
9486
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