Edexcel AS and A Level Maths. Discriminant + Modelling. Year 1 Chapter 2: Quadratics. Discriminant. Roots. Modelling. Contains discriminant question. Timestamps: 00:00 Discriminant Proof 03:11 Discriminant 05:17 Discriminant Question 07:43 Modelling Edexcel AS and A Level Maths Playlist: • Edexcel A Level Maths Twitter: / gcsealevstudent