**Solving Quadratic Equations**

with the Quadratic Formula

Solving Quadratic Equations

with the Quadratic Formula

A **quadratic equation** has the form ** ax^{2} + bx + c = 0**.

The **quadratic formula** is a formula that gives us all solutions to a quadratic equation right away. The formula is as follows:

**Example:** Solve the quadratic equation *x*^{2} – 2*x – *15* = *0 by using the quadratic formula.

We have previously solved this problem by completing the square. You can see that solution here: Solution by Completing the Square

Try to solve this problem by using the quadratic formula. I will give the full solution tomorrow.

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