Mathematics: Analysis and Approaches · Topic 2: Functions

SL2.7 — Quadratic equations and the discriminant

Mathematics: Analysis and Approaches · SL / HL · syllabus-mapped notes

1. Solving quadratic equations and inequalities

   Factorisation, completing the square and the quadratic formula, plus quadratic inequalities.

2. The discriminant and nature of the roots

   How $\Delta=b^2-4ac$ decides whether there are two, one or no real roots.