Question

evaluate by using identity
99 ^2
​

Answer 1

hope my answer helps you.

Answer 2

Answer:

${(100 - 1)}^{2}$

${100}^{2} + {1}^{2} - 2 \times 100 \times 1$

$10000 + 1 -200$

$9801$


I Hope It Will Help!

^_^