# coding: utf-8

import math

def printRoots(a, b, c):
    """функция printRoots() высчитывает корни квадратного уравнения ax**2 + bx + c = o, a != 0"""
  
    print 'ax**2 + bx + c = o, a != 0'
    print 'a = ', a, '\nb = ', b, '\nc = ', c
    print "D = b**2 - (4 * a * c)"
    print "x1 = (-b + math.sqrt(D)) / (2 * a)"
    print "x2 = (-b - math.sqrt(D)) / (2 * a)"
  
    D = b**2 - (4 * a * c)
    print " In function D = %f" % D
  
   
    x1 = (-b + math.sqrt(D)) / (2 * a)
    x2 = (-b - math.sqrt(D)) / (2 * a)

    print 'x1 =', x1
    print 'x2 =', x2,