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Post new topic   Reply to topic    4GMAT - Online GMAT Preparation Forum Index -> GMAT Problem Solving
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grkmurthy
Senior Consultant


Joined: 14 Oct 2007
Posts: 37
PostPosted: Thu Dec 27, 2007 11:04 am    Post subject: Algebra Reply with quote
If x > 3 what will be the value of (x - 6√x + 9)/ (√x-3)?

(1) √x

(2) 3√x

(3) √x+3

(4) √x-3

(5) x+√x
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ksvickram
Senior Consultant


Joined: 02 Jan 2008
Posts: 29
PostPosted: Mon Jan 07, 2008 6:42 pm    Post subject: Reply with quote
The answer is choice 4, sqrt(x) - 3.

This is solved by substituting y = sqrt (X) initially, which gets rid of the denominator.
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