I'm trying to prove/disprove that (n^2 log n + 10) / (n - 10) = O(n log n)

I think it's wrong, since we can separate (n^2 log n)/(n-10) - 10/(n-10), and we can't simplify any further. There is no way to remove the 10s, which would make it n^2 log n / n which is O(n log n), but how do I "disprove it"?