newfile.py

print("ax^2+bx=0")
a = input("a=")
a = int(a)
b = input("b=")
b = int(b)
c = input("c=")
c = int(c)
D = b*b-4*a*c
if (D < 0):
    print("Нет действительных корней")
elif (D ==0):
    x = -1*b/2*a
    print(x)
else:
    m = (-1*b - math.sqrt(D))/2*a
    n = (-1*b + math.sqrt(D))/2*a
    print("x1="+str(m)+";")
    print("x2="+str(n))