Mathematics A-Level
conjugate pairs
What conjugate pairs means in Mathematics A-Level, as defined for WJEC.
Definition of conjugate pairs
Check what you remember
Read the wording for your board, then hide it and explain conjugate pairs in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: WJEC
For a binomial denominator containing surds, such as a + b√c, the expression a − b√c used to multiply it.
Topics that use conjugate pairs
- Algebra and Functions (AS Unit 1: Pure Mathematics A) (WJEC A-Level)
Related terms
- algebraic division
- Asymptotes
- boundary curves
- Completing the square
- conjunction
- critical values
- curve sketching
- dashed and solid lines
Using conjugate pairs in the exam
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