Question

the value of (998)2 by using (a-b) 2 identity​

Answer 1

Answer:

(1000−2)

2

Using,

(a−b)

2

=a

2

−2ab+b

2

we get,

=(1000)

2

−2(1000)(2)+(2)

2

=1000000−4000+4

=996004