Discriminant of a Quadratic Equation is a new concept that you have to learn in Secondary 3 Additional Mathematics. This concept will be tested over and over again in exams and in this post, you will understand the fundamentals of discriminant. A very quick summary on what you will be learning here:
1) If discriminant is more than 0, there will be 2 distinct real roots.
2) If discriminant is equal to 0, there will be 1 real root.
3) If discriminant is less than 0, there will be no real roots.
The last point below is not covered in the video below, but it will be good to point out (basically a combined version of 1 and 2 above):
4) If discriminant is more than or equal to 0, there will be real roots. (either 1 real root or 2 distinct real roots)
Let’s now see an example where discriminant is more than 0.
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