Question

Find the value of (1001)^3-(999)^3​

Answer 1

Answer:

600002

is answer

...............

Answer 2

Answer:

Here is your answer,

a = 1000

b = 999

a^3 - b^3 =( a - b ) ( a^2 + ab + b^2 )

By using this identity,

(1000)^3 - (999)^3

= (1000-999) (1000^2 + 1000x999 + 999^2)

=(1) (1000000 + 999000 + 998001)

=2997001

Hope it helps you!