Question

evaluate (998)² using suitable identity​

Answer 1

Answer:

(998 )^2

(1000- 2)^2

using identity (a + b)^2

1000^2 + 2^2 - 2(1000)(2)

1000000+ 4 - 4000

1000004 - 4000

996,004

Answer 2

Answer:

(900+98) ^2

(a+b) ^2

(900) ^2 +(98) ^2 +2×900×98

810000+9604+176400

996004