Conjugates

Definition

A pair of expressions such as $a+\sqrt b$ and , whose product is a difference of two squares.

Specification A4 · Paper 1, Paper 2, Paper 3

Specification N8 · Paper 1, Paper 2, Paper 3

Two binomial expressions with the same terms but opposite signs between them, such as $3+\sqrt{2}$ and .

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a - b

Used by AQA and Edexcel

2

3-\sqrt{2}