Discriminant

The discriminant is the expression $b^{2}-4ac$ taken from a quadratic equation $ax^{2}+bx+c=0$. Its sign reveals the type of roots without solving: positive gives two distinct real roots, zero gives two equal roots, and negative gives no real roots.

You meet Discriminant in the Quadratic Functions chapter of SPM Additional Mathematics. Knowing the term precisely matters in the exam: questions often hinge on reading a keyword correctly, and because SPM marking is analytic, using the right definition in your working helps secure method marks.

Our teachers make sure a student can not only recite what Discriminant means but use it fluently in a full solution.

Because the SPM Add Math paper is bilingual (BM/EN), it helps to know this term in each language: Discriminant (EN) · Pembeza (BM) · 判别式 (中文)

Other key terms from the Quadratic Functions chapter you may want to check:

• Quadratic Equation
• Completing the Square
• Roots of a Quadratic Equation
• Axis of Symmetry
• Vertex Form
• Quadratic Inequality