Prove by CASES: Let x be an integer. If 3 does not divide x, then 3 divides x2−1.
Prove by CASES: Let x be an integer. If 3 does not divide x, then 3 divides x2−1.
Operations Research : Applications and Algorithms
4th Edition
ISBN:9780534380588
Author:Wayne L. Winston
Publisher:Wayne L. Winston
Chapter2: Basic Linear Algebra
Section: Chapter Questions
Problem 15RP
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Prove by CASES:
Let x be an integer. If 3 does not divide x, then 3 divides x2−1.
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