Khan Academy: Algebra: Applying Quadratic Functions 1

Video solving an application problem by finding a quadratic equation to represent the distance of a diver above the water based on his time in the air by determining his average velocity. Equation is solved using the quadratic formula....

Video solving an optimization application problem by finding a quadratic equation to represent the profit for a given product based on its selling price. Problem is solved by finding the selling price that gives a maximum value for the...

An exercise on solving a quadratic equation by applying the method of factoring by grouping. Begin by clicking on "show scratchpad."

Video solving an application problem that includes solving a radical equation. Equation is solved by isolating the square root and then squaring both sides. [5:24]

practice these multiple-choice problems over features of quadratic functions.

Practice these multiple-choice problems over features of quadratic functions.

Video solving for the domain and range of a specific function defined verbally. Equation for function is found before defining the domain and range. [3:36]

Explains how to solve two different quadratic equations using the completing the square method. [14:06]

Video finding the sum of two quadratic functions. [2:33]

Video finding the quotient of two quadratic functions and then simplifying by factoring. [6:18]