elementary number theory - Prove that $n(n^2 - 1)(n + 2)$ is divisible by $4$ for any integer $n$

Tuesday 13 June 2017

elementary number theory - Prove that $n(n^2 - 1)(n + 2)$ is divisible by $4$ for any integer $n$

Prove that $n(n^2 - 1)(n + 2)$ is divisible by $4$ for any integer $n$

I can not understand how to prove it. Please help me.

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)