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Maths GCSE surds help!!!
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Zaspo
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username1986099
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(Original post by Zaspo)
Does anyone have an easier way of doing these.
Does anyone have an easier way of doing these.
Multiply numerator and denominator by 1-(1/root2) and them simplify down.
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kate426
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#3
Didn't you watch any videos if not watch Primrose kitten she explains things in the simplest way
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Zaspo
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(Original post by kate426)
Didn't you watch any videos if not watch Primrose kitten she explains things in the simplest way
Didn't you watch any videos if not watch Primrose kitten she explains things in the simplest way
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ns_2
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#5
(Original post by Zaspo)
I know how to do surds but just can,t get my head around this one for some reason.
I know how to do surds but just can,t get my head around this one for some reason.
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Zaspo
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(Original post by ns_2)
Simply the denominator, and then work from there - rationalising the denominator, using the concept of the difference of two squares.
Simply the denominator, and then work from there - rationalising the denominator, using the concept of the difference of two squares.
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Sinnoh
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#7
Rationalise the fraction in the denominator to get 
and multiply the whole fraction by 
.
Or, if the fractions are what's causing the problems, replace it with
and multiply the whole fraction by .Or, if the fractions are what's causing the problems, replace it with
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ns_2
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gerib17
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#9
Rationalise 1/ root2
Then rationalise again by multiplying by the opposite sign of the fraction
Then rationalise again by multiplying by the opposite sign of the fraction
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Zaspo
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