RÄspuns:
2(n-1/n+2) = 2n-2/n+2
2n-2/n+2 ā¬ Z
n+2 | 2n-2
n+2 | n+2
n+2 | 2(n+2)
n+2 | 2n+4
n+2 | (2n-2)-(2n+4)
n+2 | 2n-2-2n-4
n+2 | -6
n+2 ā¬ D6
n+2 ā¬ {-6; -3; -2; -1; 1; 2; 3; 6} | -2
n ā¬ {-8; -5; -4; -3; -1; 0; 1; 4}