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(2x+1)(2x-1)-(x^2+1)
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28 Apr 2022, 02:00
28 Apr 2022, 02:00
Expert Reply
00:00
Question Stats:
73% (00:36) correct
26% (00:51) wrong based on 19 sessions
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Quantity A |
Quantity B |
\([2x+1][2x-1]-[x^2+1]\) |
\(3x^2\) |
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
Part of the project: GRE Quantitative Reasoning Daily Challenge - (2022) EDITION
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GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
Re: (2x+1)(2x-1)-(x^2+1)
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28 Apr 2022, 11:34
28 Apr 2022, 11:34
1
Option A: [2x+1][2x−1]−[x^2+1] ---> 4x^2 - 1 - [x^2-1] ----> 3x^2 - 2
Option B: 3x^2
Option B>A. hence correct ans is B
Option B: 3x^2
Option B>A. hence correct ans is B
gmatclubot
Re: (2x+1)(2x-1)-(x^2+1) [#permalink]
28 Apr 2022, 11:34
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