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Key ideas

Key ideas

Area model of one rectangle with height k and widths a and b split into areas ka and kb to show k(a + b) = ka + kb

Expanding removes brackets by multiplying the outside factor by every term inside. Factorising is the reverse process, where you rewrite a sum as a product with brackets.

Expanding and Factorising Lesson

  1. IGCSE
  2. /Maths
  3. /Expanding and Factorising

Step-by-step lessons covering Oxford AQA IGCSE Maths Expanding and Factorising for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) format. Since content from any part of the specification can appear on either paper, keep number and algebra fluency sharp throughout the course rather than leaving it until near the exam.

Lessons

Compound Interest and DepreciationIndicesPrime Factors, HCF and LCMInequalitiesForming and Solving EquationsSequences (Nth Term)Expanding and FactorisingPythagorasAngles in PolygonsSurface AreaVolume of a PrismCylindersBearingsAverages from Frequency TablesProbability