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Khan Academy on a Stick
Example 2: Using the quadratic formula
Quadratic Formula 2
The quadratic formula (quadratic equation)
How to use the Quadratic Formula
Example: Quadratics in standard form
Proof of Quadratic Formula
Example 1: Using the quadratic formula
Example 2: Using the quadratic formula
Example 3: Using the quadratic formula
Example 4: Applying the quadratic formula
Example 5: Using the quadratic formula
Example: Complex roots for a quadratic
Discriminant of Quadratic Equations
Discriminant for Types of Solutions for a Quadratic
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