Surds Rules

The basic rules for surds and how to rationalise the denominator of a fraction containing surds at the bottom.

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  • Created by: Lucy
  • Created on: 03-06-12 11:34
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[Tip: Anything in brackets treat as a fraction]
Basic Rules:
x × x = x
ab = ab
(a÷b) = a ÷ b
56 =
Rationalising the Denominator:
(1 ÷ a) × (a ÷ a) = (a ÷ a)

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