# -*- coding: cp1252 -*-
# Formula de Bhaskara by tchandy < tchandy@gmail.com >
from math import sqrt
import sys
def getvalor():
    return float(numb) ** 2 - 4 * float(numa) * float(numc)
print
print
print "Formula de Bhaskara"
print
print
while 1:
    try:
        numa = float(raw_input("Insira o valor de A: "))
        print
        numb = float(raw_input("Insira o valor de B: "))
        print
        numc = float(raw_input("Insira o valor de C: "))
        print
        break
    except:
        print
        print "Insira um Numero Valido"
        print
while 1:
    try:
        res1 = (- float(numb) + sqrt(getvalor()))
        res2 = (- float(numb) - sqrt(getvalor()))
        x1 = res1 / (2.0 * float(numa))
        x2 = res2 / (2.0 * float(numa))
        print "O Resultado eh"
        print "X1 = %s." % x1
        print "X2 = %s." % x2
        break
    except:
        print
        print "Nao existem raizes para esses numeros"
        print
        sys.exit()