Tool:
Quadratic Equations 2 
Screenshot:

Go to: 
http://www.univie.ac.at/.../gleich.html#quadr2
(opens a new window)

Description: 
Choose values of p and q in the equation x^2 + px + q = 0, and see determinations of the real roots by completing the square and use of the quadratic formula as well as a graphical visualization of the roots. 
Technology Type: 
Java Applet  
Authors: 
Franz Embacher and Petra Oberhuemer maths online 
Language: 
English  
Cost: 
Does not require payment for use 

Average Rating: 
[1]

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Courses: 
Algebra 
Quadratic Equations, Completing the Square, Quadratic Formula, Graphing 
 Algebra II 
Completing the square, Graphing 


riz 
Comment:  I think it's nice to use the graph and tie in the idea of two, one or no real roots for a quadratic, and the steps of completing the square are shown nicely. The quadratic formula is not the form traditionally used in American texts. 
