Chapter Contents

• Quadratic Equations
• 1. Solving Quadratic Equations by Factoring
• 2. Completing the Square
• 3. The Quadratic Formula
• 4. The Graph of the Quadratic Function
• 5. Equations in Quadratic Form
• Quadratic Equations Problem Solver

• Comments, Questions?

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5. Equations in Quadratic Form

In this section, we'll come across equations that are in fact quadratic, but they may not look like it at first glance.

We'll use either of the following methods to solve such equations:

• Factoring
• Quadratic formula:

Example 1

Solve: x⁴ − 20x² + 64 = 0

Answer

Example 2

Solve:

Answer

Exercises

1. Solve: 4x⁴ + 15x² = 4

Answer

2. Solve

Answer