 It is currently 18 Jun 2019, 19:41 GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here. GRE Math Challenge #33- x^2-3x+2=0  Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS: GRE Prep Club Legend  Joined: 07 Jun 2014
Posts: 4810
GRE 1: Q167 V156 WE: Business Development (Energy and Utilities)
Followers: 118

Kudos [?]: 1897  , given: 397

GRE Math Challenge #33- x^2-3x+2=0 [#permalink]
1
KUDOS
Expert's post 00:00

Question Stats: 68% (00:29) correct 32% (00:37) wrong based on 50 sessions
$$x^2-3x+2=0$$

Column A: Twice the sum of the roots of the equation

Column B: 6

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

_________________

Sandy
If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test GRE Instructor Joined: 10 Apr 2015
Posts: 1981
Followers: 60

Kudos [?]: 1803  , given: 9

Re: GRE Math Challenge #33 [#permalink]
1
KUDOS
Expert's post
sandy wrote:
-------------------------------------
x² - 3x + 2 = 0

Column A: Twice the sum of the roots of the equation
Column B: 6

A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.

--------------------------------------
x² - 3x + 2 = 0
Factor to get: (x - 1)(x - 2) = 0
So, x = 1 or x = 2

Column A: Twice the sum of the roots of the equation
Sum of roots = 1 + 2 = 3
So, TWICE the sum = (2)(3) = 6
Column B: 6

[Reveal] Spoiler:
C

Cheers,
Brent
_________________

Brent Hanneson – Creator of greenlighttestprep.com Manager Joined: 27 Sep 2017
Posts: 112
Followers: 1

Kudos [?]: 30 , given: 4

Re: GRE Math Challenge #33- x^2-3x+2=0 [#permalink]
sandy wrote:
$$x^2-3x+2=0$$

Column A: Twice the sum of the roots of the equation

Column B: 6

A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.

Let's do the factorization of $$x^2-3x+2=0$$ which is (x-1)(x-2).

The roots of equation is 1 and 2 whose sum is 3.

For Qaunt A, Twice the sum of the roots of the equation would be 6.

then A=B

ANS C Re: GRE Math Challenge #33- x^2-3x+2=0   [#permalink] 11 Mar 2018, 06:30
Display posts from previous: Sort by

GRE Math Challenge #33- x^2-3x+2=0  Question banks Downloads My Bookmarks Reviews Important topics Powered by phpBB © phpBB Group Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.