# C Program to Find Roots of a Quadratic Equation2 min read

Quadratic equations are the polynomial equation having a degree 2. For a quadratic equation `ax2+ bx + c = 0`, (a≠0) and the discriminant (`D = b2-4ac`) decides the nature of roots. There are three possibilities of discriminant and those are:

1. when d>0, the roots are real and distinct
2. when d=0, the roots are real and equal
3. when d<0, the roots are real and imaginary

In order to understand the program, you need to have the knowledge of the following in C Programming:

## Find the Roots of a Quardratic Equation in C

The program uses `sqrt()` library function in order to calculate the square root of a number. To use `sqrt()`, `math.h` header file is used.

Output:

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