Question

If​ ​n​ ​is​ ​any​ ​odd​ ​number​ ​greater​ ​than​ ​1,​ ​then​ ​n(n2​ ​-​ ​1)​ ​is​ ​always​ ​divisible​ ​by​ ​​

Answer 1

if n is any odd number greater than 1 then and Bracket and 2 - 1 bracket close is always divisible by 1