Question

Evaluate by using suitable identity (997)cube

Answer 1

Answer:

Step-by-step explanation:

We can write 997 cube as (1000-3) cube

By using (a-b) whole cube identity=acube-bcube-3ab(a-b)

We can write

(1000-3)cube =(1000)cube -(3) cube -3(1000)(3){1000-3)

=>1000000-27-9000(997)

=>1000000-27-8973000

=>-7973027

Hope it helps u!