Question

Evaluate the following using suitable identities:
(i) (99)^2

Answer 1

Answer:

9801

Step-by-step explanation:

(99)^2=(100-1)^2

=(100)^2+1^2-2×100

[(a-b)^2=a^2+b^2-2ab]

=10000+1-200=9801

Answer 2

Answer:

=> (99)^2

=> (100 - 1)^2

=> (100)^2 + (1)^2 + (2 × 100 × - 1)

=> 10000 + 1 - 200

=> 10001 - 200

=> 9801