The Discriminant
The expression in the general formula is called the discriminant of the equation, as it determines the type of roots that the equation has.![](http://spmaddmaths.blog.onlinetuition.com.my/wp-content/uploads/sites/3/2013/04/Picture18.png)
Example
Determine the nature of the roots of the following equations.
a.
b.
c.
Answer:
![](http://spmaddmaths.blog.onlinetuition.com.my/wp-content/uploads/sites/3/2013/04/Picture19.png)
Determine the nature of the roots of the following equations.
a.
b.
c.
Answer:
![](http://spmaddmaths.blog.onlinetuition.com.my/wp-content/uploads/sites/3/2013/04/Picture19.png)