14) We have the graph of an odd-degree polynomial.
It has a real root at x = 1 and two imaginary (conjugate) roots.
We can write the polynomial in general terms as:

where x²+b² is the factor that correspond to the imaginary roots and (x-c) is the factor for the real root.
Parameter a is the cubic coefficient.
We know that the real root is x = 1, so c = 1.
We know can look at two known points in order to find a and b.
One point is (0,1) and the other is (-1,2).
Then, we can write for (0,1):

Now, if we use the point (-1,2), we get:
