AS PURE MATHS REVISION NOTES
1 SURDS • √A root such as 3 that cannot be written exactly as a fraction is IRRATIONAL • An expression that involves irrational roots is in SURD FORM e.g. 2√3 • √3 + 2 and 3 - √2 are CONJUGATE/COMPLEMENTARY surds – needed to rationalise the denominator SIMPLIFYING √ = …
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