Prove that for all integers, n , n^3-n is divisible by 3.

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section: Chapter Questions
Problem 31RE: How many ways are there to choose a number from the set 10,6,4,10,12,18,24,32 that is divisible by...
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Prove that for all integers, n , n^3-n is divisible by 3.

(Use a proof by cases)

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