Curated OER
How was the Quadratic Formula Derived?
If you or your class members are interested in how the quadratic formula is derived, then take a look at this video! The tutorial takes you through each step necessary to derive the quadratic formula from the general form for a quadratic...
Curated OER
How Can You Tell When a Quadratic Equations Has No Real Solutions by Using the Quadratic Formula?
Use the quadratic formula to solve a quadratic equation. Set the quadratic equation equal to zero. Identify the coefficient values and plug them in to the quadratic formula. Solve the equation. What? No solution. Really? Watch this video...
Curated OER
How Do You Find The Discriminant of a Quadratic Equation With 2 Solutions?
A quadratic equation can have two solutions, one solution, or no solutions. The discriminant is part of the quadratic formula and can be used to find out how many answers a quadratic equation has. Watch this video and learn all about the...
Curated OER
How Do You Find The Discriminant of a Quadratic Equation With 1 Solution?
The discriminant is part of the quadratic formula. A quadratic equation can have two solutions, one solution, or no solutions. The discriminant can be used to determine how many answers a quadratic equation has. Want to know how to use...
Curated OER
How Do You Find The Discriminant of a Quadratic Equation With No Solutions?
How can you determine if a quadratic equation has no solutions before the problems is solved? Use the discriminant! What's the discriminant? It's part of the quadratic formula. Watch the instructor go through the necessary steps to use...
Curated OER
How Do You Use The Discriminant to Determine the Number of Solutions of a Quadratic Equation?
What is the discriminant? The what? The discriminant? It has something to do with quadratic equations. It's used to determine how many answers a quadratic equation has, but what is it? It's an equation that is actually a part of the...
Curated OER
What is the Discriminant?
Introduce learners to the discriminant. The discriminant, used to find the number of real solutions to a quadratic equation, is part of the quadratic formula. The video shows where in the formula you can find it, and provides an example...
Curated OER
What is the Quadratic Formula?
What do you do when you are trying to solve a quadratic equation and factoring and graphing aren't working out for you? Use the quadratic formula! Watch this video to find out exactly how to find your solutions with the quadratic...
Curated OER
The Quadratic Formula - Algebra Help
I can never remember a formula. If you're like me, watch this video clip for a quick refresher on the quadratic formula. This could be a definite help at homework time, for homeschoolers, or prior to an exam.
Curated OER
What is the Discriminant?
Introduce learners to the discriminant. The discriminant, used to find the number of real solutions to a quadratic equation, is part of the quadratic formula. The video shows where in the formula you can find it, and provides an example...
Khan Academy
Khan Academy: Algebra: Completing the Square for Quadratic Equations
Demonstrates how to complete the square for the general form of a quadratic equation, ax^2 + bx + c = 0, which results in the quadratic formula. [9:31]
Khan Academy
Khan Academy: Algebra: Applying Quadratic Functions 2
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....
Khan Academy
Khan Academy: Algebra: Quadratic Formula 2
Demonstrates how to solve a quadratic equation that begins in the form ax^2 + bx = c using the quadratic formula. [6:40]
Khan Academy
Khan Academy: Algebra: Quadratic Formula 1
Demonstrates how to use the quadratic formula to solve a quadratic equation with a negative leading coefficient. [5:34]
Khan Academy
Khan Academy: Algebra: Quadratic Formula (Proof)
Explains how to derive the quadratic formula by completing the square on the standard form of a quadratic equation. [7:34]
Khan Academy
Khan Academy: Algebra: Proof of Quadratic Formula
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]
Khan Academy
Khan Academy: Algebra: Ca Algebra I: Quadratic Equation
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]
Khan Academy
Khan Academy: Algebra: Discriminant for Types of Solutions for a Quadratic
Explains how to interpret the value of the discriminant to determine the number and types of solutions of a quadratic equation. [4:37]
Khan Academy
Khan Academy: Algebra: Complex Numbers: Complex Roots From the Quadratic Formula
Video shows how to use the quadratic formula to find roots of a quadratic equation in a situation where the roots are complex. Includes showing how to verify the answers are correct solutions of the quadratic. [10:15]
Khan Academy
Khan Academy: Algebra Ii: Quadratics and Shifts
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]
Khan Academy
Khan Academy: Algebra: Discriminant of Quadratic Equations
Identifies the quadratic formula and discusses what the values of the discriminant indicate about the number and types of solutions for a given quadratic equation. This video also appears in the Algebra: ck12.org strand. [10:14]
Khan Academy
Khan Academy: Algebra: Application Problem With Quadratic Formula
Explains how to solve a word problem regarding the amount of time it takes for a ball to hit the ground after being shot off a building by using the quadratic formula to find solutions to the given equation. [5:53]
Khan Academy
Khan Academy: Algebra Ii: Examples: Graphing and Interpreting Quadratics
Demonstrates solutions to three problems. Problems address understanding of graphs of quadratic equations and translations of graphs of quadratic equations. [11:31]
Khan Academy
Khan Academy: Algebra: Quadratic Equation Part 2
Explains how to use the quadratic formula to find the solutions to a quadratic equation. Two different examples are solved. [9:14]