First of all what is a **quadratic equation**?

A quadratic equation is any equation that you can write it in the form of . For example, . Next, how to solve this equation.

There are some methods to solve this type of quadratic equations. One of the main methods is to use quadratic formula.

The quadratic formula: gives us the solutions. There are some important points:

- If is negative, there is no solution.
- If , we have only one solution.
- If is positive, we have two solutions.
- The sum of solutions is:
- The product of solutions is : .

Read More: Linear Equations