Mathematics, 03.08.2019 16:30 lalanduni
Find all integers $n$ for which $\frac{n^2+n+1}{n-1}$ is an integer.
Answers: 1
will never vanish, and will always be rational as long as the denominator is not 1, 3, or -3.
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Find all integers $n$ for which $\frac{n^2+n+1}{n-1}$ is an integer....
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