public void FirstSolutionPass()
{
QuadEquation quad = new QuadEquation();
double b = 3;
double c = 3;
Assert.AreEqual(-1, quad.FirstSolution(b, c));
}
public void SecondSolutionPass()
{
QuadEquation quad = new QuadEquation();
double a = 10;
double b = 32;
double c = 10;
Assert.AreEqual(-1, quad.FirstSolution(a, c));
}