Question

evaluate using suitable identity (9999)^3.​

Answer 1

Answer:

999700029999

Step-by-step explanation:

we will simply take cube of 9999 and we will get the answer

Answer 2

Answer:

(999)

3

=(1000−1)

3

=(1000)

3

−(1)

3

−3(1000)(1)(1000−1).........................(∵(x−y)

3

=x

3

−y

3

−3xy(x−y))

=1000000000−1−3000(999)

=1000000000−1−2997000=997002999