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23 Sep 2018, 21:12
Kudos
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
88% (00:32) correct
12%
(00:38)
wrong
based on 850
sessions
History
Date
Time
Result
Not Attempted Yet
What is the value of x?
(1) \(2x + 1 = 0\)
(2) \((x + 1)^2 = x^2\)
(1) \(2x + 1 = 0\)
(2) \((x + 1)^2 = x^2\)
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
Italiandrummer97
Joined: 17 Apr 2018
Last visit: 08 Sep 2020
Posts: 18
Given Kudos: 19
Location: Italy
Concentration: General Management, Entrepreneurship
Schools: HEC Sept19 intake (S)
GPA: 3.75
28 Sep 2018, 23:10
Kudos
Bookmarks
Time needed: 31s
Statement 1:
\(2x+1=0\)
We have an equation with one variable, which will give us only one solution --> Sufficient
Statement 2:
\((x+1)^2 = x^2\)
The two \(x^2\) will cancel out, leaving us with an equation with one variable. Again, there's no need for calculations since they would make us waste time. --> Sufficient
Answer: D
Statement 1:
\(2x+1=0\)
We have an equation with one variable, which will give us only one solution --> Sufficient
Statement 2:
\((x+1)^2 = x^2\)
The two \(x^2\) will cancel out, leaving us with an equation with one variable. Again, there's no need for calculations since they would make us waste time. --> Sufficient
Answer: D
29 Sep 2018, 05:47
Kudos
Bookmarks
Bunuel
Question: What is the value of x?
Statement 1: \(2x + 1 = 0\)
\(i.e. x = -1/2\)
SUFFICIENT
Statement 2: \((x + 1)^2 = x^2\)
i.e. \(x+1 = -x\)
i.e. \(i.e. x = -1/2\)
SUFFICIENT
Answer: Option D
