/// <summary>
 /// Calculates the substraction of two polynomials
 /// </summary>
 /// <param name="lhs">First polynomial</param>
 /// <param name="rhs">Second polynomial</param>
 /// <returns>Substraction of polynomials</returns>
 public static Polynomial operator -(Polynomial lhs, Polynomial rhs)
 {
     return(Polynomial.Sub(lhs, rhs));
 }