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# Challenge 25 (q37)

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Manager
Joined: 04 Nov 2006
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07 Nov 2006, 06:24
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Can't understand the expln?
q. 1/(2-sqrt(3))=?

sqrt(3) - 2
2 + sqrt(3)
sqrt(2) + sqrt(3)
2 - sqrt(3)
sqrt(3) + 4
VP
Joined: 28 Mar 2006
Posts: 1372
Followers: 2

Kudos [?]: 33 [0], given: 0

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07 Nov 2006, 06:27
Multiple and divide numerator and denoiminator by 2+sqrt(3)

u get 2+sqrt(3)
Senior Manager
Joined: 05 Oct 2006
Posts: 266
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Kudos [?]: 17 [0], given: 0

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07 Nov 2006, 09:59
choice b

multiply num and den with 2+Sqrt 3
GMAT Club Legend
Joined: 07 Jul 2004
Posts: 5045
Location: Singapore
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Kudos [?]: 376 [0], given: 0

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08 Nov 2006, 02:44
1/(2-sqrt3)
= 1/(2-sqrt3) * (2+sqrt3)/(2+sqrt3)
= 2+sqrt3/4 - 3
= 2+sqrt3
SVP
Joined: 01 May 2006
Posts: 1796
Followers: 9

Kudos [?]: 154 [0], given: 0

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08 Nov 2006, 07:58
pawan82 wrote:
Can't understand the expln?
q. 1/(2-sqrt(3))=?

sqrt(3) - 2
2 + sqrt(3)
sqrt(2) + sqrt(3)
2 - sqrt(3)
sqrt(3) + 4

We are asked to find an easiest way to write the equation... to simplify it
Re: Challenge 25 (q37)   [#permalink] 08 Nov 2006, 07:58
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