Prove that the sum of the cubes of three consecutive integers is divisible by 9.
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Proof Let nn l and n 2 be three consecutive integers Then n 3 n l 3 n 2 3 n 3 n 3 3n 2 3n 1 n ...View the full answer
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Discrete and Combinatorial Mathematics An Applied Introduction
ISBN: 978-0201726343
5th edition
Authors: Ralph P. Grimaldi
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