Question

(998)^2 using identities solve

Answer 1

(998)²
It can also be written as
(1000-2)²
[Using the identity (a-b)²=a²+b²-2ab]
where a=1000, b=2
(1000)²+(2)²+2× 1000× 2
1000000 + 4 - 4000
1000004-4000
996004
So,
(998)²=(1000-2)²=996004
It's the required answer

Answer 2

${1000 - 2}^{2} \\ {1000}^{2} - 2 \times (1000) \times (2) + {2 }^{2} \\ 1000000 - 4000 + 4 \\ 996004$