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Difficulty Level: At Grade Created by: CK-12

## Introduction

In this chapter we explore functions that are no longer linear. We will introduce a quadratic equation or an equation where the largest x\begin{align*}x-\end{align*}value is squared. In addition, we will learn how to solve a quadratic equation: by factoring, using square roots, completing the square, and the Quadratic Formula. We will also introduce complex, or imaginary, numbers. Lastly, we will analyze the graph of a quadratic and use it to approximate data.

Chapter Outline

## Summary

In this chapter, you will learn all about quadratic functions. You will learn how to solve quadratic equations by factoring, completing the square, and the Quadratic Formula. Then, you will learn how to graph them, find the intercepts and vertex.

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