Question

Q) Use an expansion formula to find the value of (997)^2?

explain step by step ​

Answer 1

Step-by-step explanation:

Hiii,

Firstly (997)² can be expressed as (1000-3)²

So , (a-b)² = a²+b²-2ab

(1000-3)² = (1000)²+(3)²-2×1000×3

= 1000000+9-6000

= 994009

Thank you!!!!