- #1

- 25

- 0

## Homework Statement

Use mathematical induction to prove, for all integers [itex]n >= 1[/itex]

[itex]n^3 - n[/itex] is divisible by 3

## Homework Equations

Found equations with addition but no subtract involved.

## The Attempt at a Solution

Another question suggests you expand the brackets, then insert the original theorem which prooves that the whole statement is true? (divisible by 3)