Question

solve using appropriate identity ​

Answer 1

Step-by-step explanation:

its easy by

(198)^2 - 10^2 is

198+10 × 198-10

Answer 2

Answer:

I solve easily :

198 ×198 - 102 ×102/96

1. ( 198)2 - (102)2 /96
2. a2 - b2 = ( a+b) (a-b)
3. " = (198 +102) (198 -102)
4. = 300 × 96
5. = 96× 3 ×100
6. = 28800 (answer )