CAIE IGCSE Mathematics Extended Factorising Algebraic Expressions

Practise factorising by grouping, common factors, quadratic pairs and difference of squares, then using factors to solve integer conditions.

Syllabus
2028–2030
Objective
E2.2.4
Level
Extended

Exam points

  • take out the greatest common factor before applying any further factorisation pattern
  • group four terms to reveal a shared bracket or use a² − b² = (a − b)(a + b)
  • factorise a quadratic or cubic completely and use the factors to meet an equation's conditions

E2.2.4 Factorise expressions of the form: • ax + bx + kay + kby • a2x2 − b2y2 question 1

[Maximum number: 1]

Factorise.
a2−9a^2-9

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