CAIE IGCSE Mathematics Factorising Algebraic Expressions

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

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

[Maximum number: 1]

Factorise.
$a^2-9$

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