What you’ll learn to do: Analyze the solutions to radical equations.

An equation containing a second-degree polynomial is called a quadratic equation. For example, equations such as $2{x}^{2}+3x - 1=0$ and ${x}^{2}-4=0$ are quadratic equations. They are used in countless ways in the fields of engineering, architecture, finance, biological science, and, of course, mathematics.

Specifically, in this section you’ll learn how to:

• Use square roots and completing the square
• Use the quadratic formula