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Slide 1

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Surds are roots of numbers written as
Rational numbers are:- Irrational numbers are:
(1) Whole numbers
(1) never ending, non
(+ve or ­ve) repeating decimals
(2) Fraction ( is irrational)
(+ve or ­ve)
(3) A recurring
decimal (Surds)…read more

Slide 2

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Rules For Surds
(5)…read more

Slide 3

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Rationalising the denominator
Is to get rid of the surd from the denominator & make it a
whole number by multiplying by the appropriate square root.
You must multiply the numerator & denominator.
Rationalise the denominator of
= = =…read more

Slide 4


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