Question

expansion formula-(please answer it with explanation.)
(998)²=

Answer 1

Answer:

9,96,004

Step-by-step explanation:

= (1,000-2)^2

Since (a-b)^2 = a^2 + 2ab +b^2

= (1,000)^2 + 2^2 - 2(1,000*2)

= 10,00,000 + 4 - 4,000

= 9,96,004

Answer 2

Answer:

(1000 - 2) ^2 = 1000^2 - 2*1000*2 + 2^2

= 10,00,000 - 4,000 + 4

= 9,96,004