print "enter a:"

a = input()

print "enter b:"
b = input()
print "enter c:"
c = input()

disc = pow(b,2) - 4*a*c

x1 = (-b - sqrt(disc) ) / (2*a)
x2 = (-b + sqrt(disc) ) / (2*a)

print "x1: "    print x1    newline
print "x2: "    print x2    newline