Question

Using suitable identity evaluate: 99 ²​

Answer 1

Answer:

Here is your answer and mark mine as brainliest mate ...

Step-by-step explanation:

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

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

Answer 2

Hey Mate 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 mate...⭐⭐