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#1 2005-09-17 21:42:17
- tilly
- Guest
Rationalising denominators.
hey, i was wondering if you could show me how to rationalise the denomiators on a couple of these, in easy steps.
1
----
√ 2
√ 2
------
3√ 3
√ 43 - √ 23
-------------
√ 43 + √ 23
#2 2005-09-17 23:01:07
- MathsIsFun
- Administrator
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Re: Rationalising denominators.
As in getting rid of radicals in the denominator?
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman
#4 2005-09-18 18:02:26
- MathsIsFun
- Administrator
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Re: Rationalising denominators.
√ 2
------
3√ 3
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman
#6 2005-09-29 00:48:16
- mathsyperson
- Moderator
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Re: Rationalising denominators.
√43 - √23 √43 - √23 43 - 2√(43x23) + 23 66 - 2√989
------------- x ------------ = ------------------------ = -------------
√43 + √23 √43 - √23 43 - 23 20
The math tag looks rather complex.
Why did the vector cross the road?
It wanted to be normal.
#8 2005-10-07 08:00:07
- MathsIsFun
- Administrator
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Re: Rationalising denominators.
A baby taught us, see Multiplying Negatives
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman