Demonstrates how to derive the quadratic formula from the standard form of a quadratic equation by completing the square. This video also appears in the Algebra: ck12.org strand. [7:44]

Demonstrates solutions to problems #53-57 of California Algebra I released state test questions. Problems address an understanding of solving quadratic equations by completing the square and the quadratic formula. [10:14]

Demonstrates solutions to four problems. Problems address understanding of quadratic equations, ways to solve quadratic equations, and translations of graphs of quadratic equations. Practice problems available. [11:53]

Pick from a variety of tutorials to teach how to solve quadratic equations using various methods.

Solving a quadratic by completing the square.

Completing Perfect Square Trinomials.

Demonstrates how to derive the quadratic formula from the standard form of a quadratic equation by completing the square.

This video demonstrate an understanding of solving quadratic equations by completing the square and using the quadratic formula.

Using the completing the square to find the roots of the quadratic equation.

Completing the Square to Solve Quadratic Equations.

A video showing how to complete the square.

Students learn how to complete the square to solve quadratic equations. Notes, examples, and a video lesson explore the math concept.

Problems address understanding of quadratic equations, ways to solve quadratic equations, and translations of graphs of quadratic equations.

In this lesson, we will learn how to find the quadratic function when we are given the graph of a parabola. Worked examples and a video are included. [8:22]