This full solution covers the following key subjects: divides, Integer, Positive, prove, whenever. This expansive textbook survival guide covers 101 chapters, and 4221 solutions. Discrete Mathematics and Its Applications was written by and is associated to the ISBN: 9780073383095. The answer to “Prove that 3 divides n3+ 2n whenever n is a positive integer.” is broken down into a number of easy to follow steps, and 12 words. This textbook survival guide was created for the textbook: Discrete Mathematics and Its Applications, edition: 7. The full step-by-step solution to problem: 32E from chapter: 5.1 was answered by , our top Math solution expert on 06/21/17, 07:45AM. Since the solution to 32E from 5.1 chapter was answered, more than 237 students have viewed the full step-by-step answer.