Tuesday, 29 November 2011

C1 - Algebra and Functions - Quadratic Equations (Solving using Formula)

One of the methods, apart from Factorisation is using the Quadratic Formula. Usually, when a quadratic equations cannot be factorised, it is a good idea to use the Formula. Though the formula works for all quadratic equations. We have to use the form ax^2 + bx + c. Identity our coefficients and simply substitute into the formula which is :

There's nothing else to know I reckon for the Quadratic Equation. Though I will show you how to derive it by Completing the Square (which i will cover in the next post). Another fundamental point that comes out of the Formula, is the b^2 - 4ac, this is called the Discriminant. We shall look it later, it is important because we can determine how a quadratic function may look, and the number and types of roots assosciated with the equation.

Quadratic Formula Notes

TO SEE ANY OF MY IMAGE NOTES IN FULL, right click and click on view image.



  1. I'm not sure exactly why but this website is loading very slow for me. Is anyone else having this problem or is it a problem on my end? I'll check back later on and
    see if the problem still exists.

    Have a look at my site - Christian Louboutin Heels

  2. Very good article. I'm dealing with many of these issues as well..

    Here is my web site ... Tory Burch Shoes

  3. It's amazing to go to see this website and reading the views of all mates on the topic of this paragraph, while I am also keen of getting know-how.

    Here is my weblog - michael Kors outlet (Overuc.com)