Solutions:
1) \(x^2 +6x +8\)
2) \(x – 3\)
3) \(x^2 + x -6\)
4) \(2x^2 + 6x + 4\)
This problem can be solved by synthetic division- but it takes some considering. In this case the number outside would be \(\frac{1}{2}\). Synthetic division is used later in the function unit to find zeros of the functions.