Quadratic Functions

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A helpful scientific calculator that runs in your web browser window.

In this video, Salman Khan of Khan Academy explains completing the square.

This video includes sample exercises and step-by-step explanations of shifting quadratic graphs and finding x-intercepts (roots) for the California Standards Test.

This video includes sample exercises and step-by-step explanations of solving quadratics and graph shifts for the California Standards Test.

How to solve quadratic equations using the completing the square method.

Excellent site showing examples of algebra, trig, calculus, differential equations, and linear algebra.

Quiz on Quadratic Equations and Applications and Inequalities

Online graphing calculator, useful for drawing out a function to visualize it or find key points.

Interactive tutorial and explanation involving qudratic functions (graphing and equations).

How to solve quadratic equations using the quadratic formula

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