0 like 0 dislike
42 views
Find all real numbers $x$ such that $x^n+x^{-n}$ is an integer for all $n \in \mathbb{Z}$.
| 42 views

0 like 0 dislike
0 like 0 dislike
0 like 0 dislike
0 like 0 dislike
0 like 0 dislike
0 like 0 dislike
1 like 0 dislike
0 like 0 dislike
0 like 0 dislike