SPM Form 4 Add Maths_Chapter 02 Quadratic Equations

The basic of this chapter is that students should understand about the Sum of Root (SOR) and Product of Root (POR) and know how to apply them in real case. The video below also brings out some of the common mistakes of students while solving questions involve this chapter.

One of the questions which is commonly come out in the Past Year Question is to ask students to form a new quadratic equation with the given roots as shown in the example in the video below. Students should bear in mind the equation of "x² –(SOR)x+(POR) =0" in which this formula is useful in solving a lot of questions involving quadratic equation. To avoid confusion, take α & β to represents the new root.

In order to enhance the understanding of students, the below video shows another 3 useful examples where students will get to learn about the difference between "two distinct (different) roots", "two equal roots" and "no roots (aka no intersect)". Students will then get to know when to use "b²- 4ac =0", "b²- 4ac >0" and "b²- 4ac <0".

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