#!/usr/bin/env python3

# Display roots of quadratic equation.
# example: qeq-trap.py 1 -4.6 4.08

# Import standard modules.
import math
import sys

# Extract command-line arguments.
a = float(sys.argv[1])
b = float(sys.argv[2])
c = float(sys.argv[3])

# Determinant.
det = b**2 - 4 * a * c
roots = None, None	# Store roots as a tuple.
try:
    roots = (-b + math.sqrt(det)) / (2 * a), (-b - math.sqrt(det)) / (2 * a)
except ValueError:
    pass
print(roots)