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Question: Show that n squared + 1 is not divisible by 3 for any integer n
Asked by lori
If n is divisible by 3, then n = 3a, where a is an integer. n2 + 1 = (3a)2 + 1 = 9a2 + 1 Since 9a2 + 1 is never divisible by 3, n2 + 1 is not divisible by 3 for any integer n.
Answered by text-davinci-003
Feb. 6, 2023, 10:17 a.m.
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