What's wrong with my code for discriminant?

Question

import math
a = float(input())
b = float(input())
c = float(input())
d = (b**2)-(4*a*c)
if d < 0:
print('Корней уравнения нет')
elif d > 0:    
n=(math.sqrt(d)-b)/(2*a)
m=(-math.sqrt(d)-b)/(2*a)    
print('Первый корень равен ','%.4f'%n)
print('Второй корень равен ','%.4f'%m)
elif d == 0:    
n=(-b)/(2*a)    
print('Корень равен ','%.4f'%n)
input()

Answer 1

Since there are some invalid characters, you need to delete your elif statements and rewrite them.

Answer 2

Thx you simba

Answer 3

I want to learn java script which is very amazing language