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The main method

The main method

Flowchart showing the three brackets (x+3), (x+4), and (x+2) becoming a quadratic and then a cubic during expansion

A triple bracket such as (x+2)(x+5)(x−1)(x+2)(x+5)(x-1)(x+2)(x+5)(x−1) means three linear factors are being multiplied together. The safest method is to expand any two brackets first, simplify to a quadratic, then multiply by the remaining bracket.

Expanding Triple Brackets Lesson

  1. IGCSE
  2. /Maths
  3. /Expanding Triple Brackets

Step-by-step lessons covering CIE IGCSE Maths Expanding Triple Brackets for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended) format. Start with the Core-tier fundamentals in number and algebra before moving on to the more demanding Extended-only topics like calculus-adjacent algebra and advanced trigonometry.

Lessons

Recurring Decimals to FractionsFractional and Negative IndicesDirect and Inverse ProportionExpanding Triple BracketsSolving Simultaneous Equations GraphicallyGradient of a LineEquation of a LineSpheres and ConesSector Areas and Arc LengthsParallel and Perpendicular LinesSimilar Shapes (Area and Volume)Circle TheoremsCumulative FrequencyProbability Trees