import math
def quadratic(a, b, c):
    p = b**2 - 4 * a * c
    if p < 0:
        p = -p
        print("Result x1 = %f + %fi" % ((-b/(2 * a),math.sqrt(p)/( 2 * a))))
        print("Result x2 = %f - %fi" % ((-b/(2 * a),math.sqrt(p)/( 2 * a))))
    else:
        x1 = (-b + math.sqrt(b**2 - 4 * a * c))/(2 * a)
        x2 = (-b - math.sqrt(b**2 - 4 * a * c))/(2 * a)
        print(x1)
        print(x2)
a = float(input("Input a's value:"))
b = float(input("Input b's value:"))
c = float(input("Input c's vaule:"))
quadratic(a, b, c)

__author__ = 'www.99cankao.com'