GRE Prep 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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
What are the values of x that satisfy
[#permalink]
26 Apr 2021, 12:44
26 Apr 2021, 12:44
1
Expert Reply
5
Bookmarks
00:00
Question Stats:
20% (01:40) correct
79% (01:36) wrong based on 34 sessions
Hide Show timer Statistics
What are the values of x that satisfy the equation \(|x^2-x+1|=2x-1\)
Select all that apply
A. x=-1
B. x=1
C. x=3
D. x=2
E. x=-3
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Select all that apply
A. x=-1
B. x=1
C. x=3
D. x=2
E. x=-3
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Re: What are the values of x that satisfy
[#permalink]
26 Apr 2021, 21:47
26 Apr 2021, 21:47
2
only 1 and 2 values satisfy both sides of the equation, thus the answer should be B and D
Re: What are the values of x that satisfy
[#permalink]
27 Apr 2021, 05:49
27 Apr 2021, 05:49
1
If someone is geek like me who loves to solve equations, then there will be 2 equations after removing modulus:-
x^2-x+1 = 2x-1 and x^2-x+1 = -2x+1
Solving these
we will get x=1,-1,2,0
Hence, A B and D.
x^2-x+1 = 2x-1 and x^2-x+1 = -2x+1
Solving these
we will get x=1,-1,2,0
Hence, A B and D.
