Quadratic equation---IIT DHOLAKPUR

import math

g=input("Enter the quadratic equation ")
g=g.split("+")

a1=str(g[0])
a1=a1.split("x^2")
if a1[0]=="":
    a=1
else:
    a=int(a1[0])
print(a)

b1=str(g[1])
b1=b1.split("x")
if b1[0]=="":
    b=1
else:
    b=int(b1[0])
print(b)

c1=str(g[2])
c1=c1.split("x")
if c1[0]=="":
    c=0
else:
    c=int(c1[0])
print(c)

d=b**2-4*a*c
if d>=0:
    x1=(-b+math.sqrt(d))/(2*a)
    x2=(-b-math.sqrt(d))/(2*a)
    print(x1,x2,"are the roots of the equation ")
elif d<0:
    d=-1*d
    x1=(-b/(2*a))
    x2=d/2*a
    x3=complex(x1,x2)
    x4=complex(x1,(-1*x2))
    print(x3,x4,"are the roots of the equation ")