Solving Quadratic Equations with Square Roots

Pupils learn to solve square root equations and rationalize denominators. Problems include those with extraneous solutions. 

The central concept in this video is solving quadratics by factoring. Several examples are shown with positive and negative numbers. The instructor demonstrates setting the factored equation to zero to solve the quadratic, using a graph...

Sal first solves some equations using the factoring method he has already taught. Next, he introduces the quadratic formula and demonstrates how to plug the numbers from the quadratic equation into the quadratic formula. He then solves...

Completing the square is an effective way to solve a quadratic equation. Introduce your class to this technique and use this video to complement your lesson. This resource takes viewers through the process of completing the square,...

Completing the square is an effective way to solve a quadratic equation. Introduce your class to this technique and use this video to complement your lesson. This resource takes viewers through the process of completing the square,...

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...

Demonstrates how to solve a quadratic equation by factoring where the first step is to set the equation equal to zero. The quadratic polynomial in the example is a perfect square trinomial. [3:19]

There are many methods that can be used to solve a quadratic equation. The teacher demonstrates how to use the square root method to solve this equation. But wait, how can there be two solutions? And how can one of them be a negative...

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...

This video explains how to use the zero product property to factor and solve a quadratic equation. [5:36]