Khan Academy
Learn about quadratic functions and equations with videos, practice problems, and interactive exercises on Khan Academy.
Khan Academy
Learn how to graph a parabola in vertex form with Khan Academy's detailed video tutorial.
Khan Academy
Learn about vertex form in quadratic functions and equations with Khan Academy's introductory video.
Khan Academy
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Khan Academy
Divide both sides by two, and this just straightforward solving a linear equation. If this looks unfamiliar, I encourage you to watch videos on solving linear equations on Khan Academy, but you'll get X is equal to 1/2 as one solution.
Khan Academy
Khan Academy
Khan Academy
Review of completing the square method for solving quadratic equations on Khan Academy.
Quadratic equation - Khan Academy
Up next for you: Solving quadratic equations of the type x²=k Get 3 of 4 questions to level up!
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Use completing the square to find the roots of the quadratic equation right here. And when anyone talks about roots, this just means find the x's where y is equal to 0. That's what a root is.
Khan Academy
Sal solves a volume problem using a quadratic equation. Skip to main content If you're seeing this message, it means we're having trouble loading external resources on our website.