Instructional Video
Khan Academy

Khan Academy: Algebra: Using the Quadratic Formula

9th - 10th Standards
Video shows how to use the quadratic formula to solve quadratic equations. The solutions to one example are verified by graphing the associated quadratic function. Includes link to additional practice problems. [16:32]
Instructional Video
Khan Academy

Khan Academy: Quadratic Odds and Ends: Introduction to the Quadratic Equation

9th - 10th Standards
The video demonstrates how to use the quadratic equation to solve second degree polynomials.
Instructional Video
Khan Academy

Khan Academy: Quadratic Odds and Ends: Quadratic Equation Part 2

9th - 10th Standards
A video showing examples of solving equations using the quadratic equation.
Instructional Video
Khan Academy

Khan Academy: The Quadratic Formula: How to Use the Quadratic Formula

9th - 10th Standards
Introduction to using the quadratic formula.
Instructional Video
Khan Academy

Khan Academy: Algebra: Introduction to the Quadratic Equation

9th - 10th Standards
Students learn about the quadratic equation. The resource examines how to use the quadratic equation to solve second degree polynomials. The video tutorial investigates the mathematics concept through detailed notes and examples.
Instructional Video
Khan Academy

Khan Academy: Algebra: Quadratic Equation 2

9th - 10th
Students learn how to solve equations using the quadratic equation. The video tutorial investigates the mathematics concept through detailed notes and examples.