Question

Show that if a number is doubled, then it cube becomes eight
times the cube of the given number.​

Answer 1

Step-by-step explanation:

Let n be any given number . 

now according to question m=2n; 

m^3 = (2n)^3 = 2^3 * n^3 = 8n^3. 

hence m^3 is eight times the cube of the given number n.