Video lessons for Oxford AQA IGCSE Maths Factorising Harder Quadratics. 1 lesson matched to the Oxford AQA IGCSE Maths (9260) specification, each working through the content and then applying it to exam-style questions in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) format. Suitable for Core and Extended tier.