Mathematics A-Level
difference of squares
What difference of squares means in Mathematics A-Level, as defined for WJEC.
Definition of difference of squares
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Reference: WJEC
Expanding (a + b√c)(a − b√c) = a² − b²c, which produces a purely rational integer denominator.
Topics that use difference of squares
- 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 difference of squares in the exam
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