Question: 1) Prove that: For any integer n, the number (n 3 - n) is even. 2) State which proof method is used in your proof.

1) Prove that:

For any integer n, the number (n3 - n) is even.

2) State which proof method is used in your proof.

3) Discuss why, or why not, alternative proof methods would also work for the example you chose.

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