# Python Example – Write a Python program to find the roots of a quadratic function. # (Python Example for Citizen Data Scientist & Business Analyst)

Write a Python program to find the roots of a quadratic function.

Sample Solution:

Python Code:

``````
from math import sqrt

print("Quadratic function : (a * x^2) + b*x + c")
a = float(input("a: "))
b = float(input("b: "))
c = float(input("c: "))

r = b**2 - 4*a*c

if r > 0:
num_roots = 2
x1 = (((-b) + sqrt(r))/(2*a))
x2 = (((-b) - sqrt(r))/(2*a))
print("There are 2 roots: %f and %f" % (x1, x2))
elif r == 0:
num_roots = 1
x = (-b) / 2*a
print("There is one root: ", x)
else:
num_roots = 0
print("No roots, discriminant < 0.")
exit()
``````

Sample Output:

```Quadratic function : (a * x^2) + b*x + c
a: 5
b: 20
c: 10
There are 2 roots: -0.585786 and -3.414214```

## Write a Python program to find the roots of a quadratic function

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