In this tutorial, you will find the **Python 3 program to solve a quadratic equation**. To understand this example, you should have the basic knowledge of Python programming concepts such as variables, data types, and operators.

If you are looking for some good books to learn Python, then do check out our recommended list.

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## Python 3 Program To Solve A Quadratic Equation

Formula to calculate a quadratic equation = ax² + bx + c = 0, where a, b and c are real numbers and a ≠ 0. In the Python code below, users will have to enter the values of a, b, and c and then the program will output the solutions of the quadratic equation.

### Source Code

import cmath # import complex math module a = float(input("Enter the value of a= ")) b = float(input("Enter the value of b= ")) c = float(input("Enter the value of c= ")) d = (b**2) - (4*a*c) ## calculate the discriminant sol1 = (-b-cmath.sqrt(d))/(2*a) # Calculating the first solution sol2 = (-b+cmath.sqrt(d))/(2*a) # Calculating the second solution print('The solution of your quadratic equation are {0} and {1}'.format(sol1,sol2))

Now, let’s calculate the roots of an equation x^{2}+5x+6 = 0.

Here, a=1, b=5, and c=6.

### Run The Program

**Output**

**Also Check**:

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