Question

Using identities, evaluate : 98​

Answer 1

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