Question

using identities, evaluate 99^2

Answer 1

99²=(99)(99)=(100-1)(100-1)=(100-1)²=100²+1²-2(100)(1)=10000+1-200=9801

Answer 2

Hey dear here is your answer!!!!!

___________________________

We can re - write 99² as (100 - 1)²

This makes our calculations very simple !

We use the identity:-

(a - b)² = a² + b² - 2ab

And here we go:-

(100 - 1)² = (100)² + (1)² - 2(100)(1)

              =10000 + 1 - 200

              =9801

Therefore, we have evaluated 99² using identities.

Hence, 99² = 9801

❣️⭐ Hope it helps you dear...⭐⭐❣️❣️