Edexcel IGCSE Maths

Revision Notes

2.3.1 Expanding Two Brackets - Basics

What is expanding two brackets?

  • When we expand brackets in algebra we ‘get rid of’ the brackets by multiplying out
  • When we expand two brackets, each term in one bracket gets multiplied by each term in the other bracket

Beware of minus signs

“ − × − = + ”

“ − × + = − ”

How to multiply out two brackets

  • Write FOIL above your working space
    F – First term in each bracket
    O – Outer pair of terms
    I – Inner pair of terms
    L – Last term in each bracket
  • Write down the four multiplications
  • Careful here – you have to be sure to include any minus signs!
  • Simplify by collecting like terms (if there are any)

Worked Example

Expanding Two Brackets - Worked Example , downloadable IGCSE & GCSE Maths revision notes by Save My Exams teachers for AQA, CIE, Edexcel & OCR exam boards


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