#!/usr/bin/env ruby

require 'complex'

print "Valor de a: "
a = gets.to_f
print "Valor de b: "
b = gets.to_f
print "Valor de c: "
c = gets.to_f

if a==0
   puts "a no puede ser 0"
   Kernel::exit(1)
end

square = b**2-4*a*c
square = square<0 ? Math::sqrt(Complex.new(square,0)) : Math::sqrt(square)

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

puts x1
puts x2