The Quadratic Formula

The Quadratic Formula
  • Currently 3.0/5 Stars.
2719 views, 1 rating - 00:07:24
Taught by MrRutter

Meets NCTM Standards:

Learn how to solve quadratic equations using the Quadratic Formula.
  • What is the Quadratic Formula?
  • How do you solve quadratic equations using the Quadratic Formula?
  • How do you solve x^2 + x - 6 = 0 using the quadratic formula?
  • How do you know what numbers go into a, b, and c in the quadratic formula?
  • How do you solve x^2 + x - 6 = 0 by factoring?
  • How do you solve 3x^2 + 2x + 5 = 0 using the quadratic formula?
  • What is the discriminant and what does it tell you about your solutions?
  • What happens if you have the square root of a negative number in the quadratic formula?
  • How can you tell how many answers you should have and what they should look like with the discriminant?
This lesson is a step-by-step tutorial for plugging numbers into the quadratic formula and solving. A great video for learning how this formula works and for some extra practice. The discriminant is explained, and a problem is even done in which the solution is imaginary and also irrational.
  • Currently 3.0/5 Stars.
Reviewed by MathVids Staff on April 18, 2009.
 
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