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The reciprocal of x - 2 is x +2

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The reciprocal of x - 2 is x +2 [#permalink] New post 17 Dec 2017, 12:50
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Question Stats:

81% (00:34) correct 18% (00:44) wrong based on 11 sessions
The reciprocal of x - 2 is x +2

Quantity A
Quantity B
x
3


A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal
D. The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

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Re: The reciprocal of x - 2 is x +2 [#permalink] New post 10 Jan 2018, 19:48
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x-2=1/(x+2)
(x+2)(x-2)=1
x^2-2^2=1
x^2=5
x=√5, which is 2.2
Hence, Quantity B is greater than A
Re: The reciprocal of x - 2 is x +2   [#permalink] 10 Jan 2018, 19:48
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The reciprocal of x - 2 is x +2

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