#### Answer

n-1

#### Work Step by Step

To solve by long division, follow these steps.
1) Divide n^2 by to get n.
2) Multiply n(n-4) = n^2 -4n Then subtract.
3) Bring down the remaining 4.
4) Divide -n by n to get -1.
5) Multiply -1(n-4) to get -n+4 and then subtract. leaving you with a remainder of 0.
Therefore, your answer is n-1.