Question

9. Prove that if a number is doubled then its cube
is 8 times the cube of the given number.​

Answer 1

Answer:

yes it's true

Step-by-step explanation:

let number = a

cube of it = a^3

new number = double of it =2a

cube of it = (2a)^3

cube of it = 8a^3

the cube of the given number = a^3

and the cube of doubled number = 8a^3

hence proved........