GCSE Maths (Edexcel)
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Algebra
Notation, Vocabulary and Manipulation
Factorising Simple Quadratics
5:31
Factorisation
Spec
A1
A4
- A quadratic is an expression with its highest power in x being x squared
- Simple quadratics have a coefficient of x squared equal to 1 and are the easiest to factorize
- To factorize a quadratic, find two numbers that add to give the coefficient of the linear x term and multiply to give the constant term
- When the number term is positive, the factors can be both positive or negative
- When the number term is negative, one factor will be positive and one factor will be negative
- Double check the answer by expanding the double bracket to get the original quadratic expression
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