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Suppose that  (n)={n2,n+2,2n,n2}. For example, (6)={3,4,8,12}. FOr how many distinct integers n does (n)have exactly three distinct elements?

 Jul 24, 2022
 #1
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There are exactly 3 values of n:

n = 0, n = 2, and n = -2.

 Jul 24, 2022

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