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x2 + 2x − 2

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Carcass

Verbal Expert

Joined: 18 Apr 2015

Posts: 18332

GRE 1: Q160 V160

x2 + 2x − 2 [#permalink]

03 Oct 2018, 21:51

Expert Reply

00:00

Question Stats:

82% (00:28) correct

17% (00:24) wrong

based on 151 sessions

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Quantity A	Quantity B
$x^2 + 2x − 2$	$x^2 + 2x − 1$

Quantity A is greater.
Quantity B is greater.
The two quantities are equal.
The relationship cannot be determined from the information given.

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GreenlightTestPrep

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Re: x2 + 2x − 2 [#permalink]

04 Oct 2018, 12:48

Expert Reply

Carcass wrote:

Quantity A	Quantity B
$x^2 + 2x − 2$	$x^2 + 2x − 1$

We can solve this question using matching operations

Given:
Quantity A: x² + 2x − 2
Quantity B: x² + 2x − 1

Subtract x² from both quantities to get:
Quantity A: 2x − 2
Quantity B: 2x − 1

Subtract 2x from both quantities to get:
Quantity A: −2
Quantity B: −1

-1 > -2, so the correct answer is B

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