# Section 3.5: Solving Quadratic Equations by the Quadratic Formula

**Section 3.5 Textbook: Solving Quadratic Equations by the Quadratic Formula**

Section 3.5 Textbook: Solving Quadratic Equations by the Quadratic Formula

**Learning objectives**

• Solve quadratic equations using the quadratic formula.

• Identify and choose methods for solving quadratic equations.

• Solve real-world problems using functions by completing the square.

**Section 3.5 Videos**

**Video Lessons**

**Video Examples**

- Ex: Simplify a Radical Expression (Quadratic Formula Practice)
- Proof of The Quadratic Formula
- Ex: Quadratic Formula - Two Real Rational Solutions
- Ex: Quadratic Formula - One Real Rational Repeated Solution
- Ex1: Quadratic Formula - Two Real Irrational Solutions
- Ex2: Quadratic Formula - Two Real Irrational Solutions
- Ex: Quadratic Formula - Complex Solutions

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