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Which expression is equivalent to

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GMAT Club Legend
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Joined: 07 Jun 2014
Posts: 4750
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
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Which expression is equivalent to [#permalink] New post 03 Apr 2017, 03:01
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00:00

Question Stats:

50% (01:06) correct 50% (01:08) wrong based on 10 sessions
Which expression is equivalent to \(\frac{1}{y - (1 \div y)}-y\)?

A. \(\frac{y^3 + y -1}{y^2 -1}\)

B. \(\frac{2y - y^3}{y^2 -1}\)

C. \(\frac{-y^3}{y^2 -1}\)

D. \(y^3 + y -1\)

E. \(- y -1\)

Drill 2
Question: 2
Page: 318
[Reveal] Spoiler: OA

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GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4750
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 93

Kudos [?]: 1664 [0], given: 396

CAT Tests
Re: Which expression is equivalent to [#permalink] New post 03 Apr 2017, 05:24
Expert's post
Explanation

This is a good problem for Plugging In. If y = 2, then the expression becomes equal to − \(\frac{4}{3}\). Choice B is the only choice that gives you − when you replace y with 2.

Hence option B is correct.
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Sandy
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Re: Which expression is equivalent to   [#permalink] 03 Apr 2017, 05:24
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