Question

show that n3-n is divisible by 8,
if n is an odd positive integer​

Answer 1

Answer:

To Prove n³- n is divisible by 8, where n is a odd positive integer.

Let's assume n = 3,

Then, 3³ - 3 = 27 - 3 = 24; Where 24 is divisible by 8

Step-by-step explanation:

Answer 2

Answer:

For n take any odd positive integer.

Step-by-step explanation:

Suppose n = 5

now n3= 125

now 125-5= 120

Divide 120 by 8

=15 Ans.