Using identities, evaluate : 98
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Answer:
9604
Step-by-step explanation:
we can write (98)² as (100 - 2 )²
using identity :-
(a - b)² = (a)² + (b)² - 2ab
Therefore,
= (100 - 2 )² = (100)² + ( 2 )² - 2(100)(2)
= 10000 + 4 - 400
= 10004 - 400
= 9604
So, (98)² = 9604