old_contents: import math
  
  def QuadraticEquation(a,b,c):
      """
      Prints the solutions for a quadratic equation, given the numerical coefficients a, b and c,
      for a*x*x + b*x + c.
      Ex.: a = 1, b = 3, c = -4
      Solution1 = 1 and Solution2 = -4
      """
      Delta = b*b - 4*a*c
      if a != 0:
          if Delta >= 0:
              Solution1 = (-b + math.sqrt(Delta))/(2*a)
              Solution2 = (-b - math.sqrt(Delta))/(2*a)
              print("The equation solutions are: ", Solution1," and ", Solution2)
          else:
              """
              Treats cases of Complexes Solutions(i = imaginary unit)
              Ex.: a = 5, b = 2, c = 1
              Solution1 = (- 2 + 4.0 *i)/2 and Solution2 = (- 2 + 4.0 *i)/ 10
              """
              if b > 0:
                  print("The equation solutions are: (-",b,"+",math.sqrt(-Delta),"*i)/2  and  (-",b,"+",math.sqrt(-Delta),"*i)/", 2*a)
              if b < 0:
                  print("The equation solutions are: (",b,"+",math.sqrt(-Delta),"*i)/2  and  (",b,"+",math.sqrt(-Delta),"*i/",2*a)
              if b == 0:
                  print("The equation solutions are: (",math.sqrt(-Delta),"*i)/2  and  ",math.sqrt(-Delta),"*i)/", 2*a)
      else:
          print("Error. Please, coeficient 'a' must not be zero for quadratic equations.")
  def main():
      a = 5
      b = 6
      c = 1
  
      QuadraticEquation(a,b,c) # The equation solutions are:  -0.2  and  -1.0
  
  
  if __name__ == '__main__':
      main()
  
new_contents: from math import sqrt
  from typing import Tuple
  
  
  def QuadraticEquation(a: int, b: int, c: int) -> Tuple[str, str]:
      """
      Given the numerical coefficients a, b and c,
      prints the solutions for a quadratic equation, for a*x*x + b*x + c.
  
      >>> QuadraticEquation(a=1, b=3, c=-4)
      ('1.0', '-4.0')
      >>> QuadraticEquation(5, 6, 1)
      ('-0.2', '-1.0')
      """
      if a == 0:
          raise ValueError("Coefficient 'a' must not be zero for quadratic equations.")
      delta = b * b - 4 * a * c
      if delta >= 0:
          return str((-b + sqrt(delta)) / (2 * a)), str((-b - sqrt(delta)) / (2 * a))
      """
      Treats cases of Complexes Solutions(i = imaginary unit)
      Ex.: a = 5, b = 2, c = 1
      Solution1 = (- 2 + 4.0 *i)/2 and Solution2 = (- 2 + 4.0 *i)/ 10
      """
      snd = sqrt(-delta)
      if b == 0:
          return f"({snd} * i) / 2", f"({snd} * i) / {2 * a}"
      b = -abs(b)
      return f"({b}+{snd} * i) / 2", f"({b}+{snd} * i) / {2 * a}"
  
  
  def main():
      solutions = QuadraticEquation(a=5, b=6, c=1)
      print("The equation solutions are: {} and {}".format(*solutions))
      # The equation solutions are: -0.2 and -1.0
  
  
  if __name__ == "__main__":
      main()
  
subject: Add test for QuadraticEquation() (#1107)