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.
GRE Math Challenge #95- x^2 + 2x + 1 or x^2
[#permalink]
Updated on: 20 Feb 2020, 00:35
Updated on: 20 Feb 2020, 00:35
3
Expert Reply
1
Bookmarks
00:00
Question Stats:
76% (00:32) correct
23% (00:34) wrong based on 199 sessions
Hide Show timer Statistics
Quantity A |
Quantity B |
\(x^2 + 2x + 1\) |
\(x^2\) |
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.
Kudos for the right answer and explanation
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
GRE Math Challenge #95- x^2 + 2x + 1 or x^2
[#permalink]
07 Aug 2017, 08:14
07 Aug 2017, 08:14
3
sandy wrote:
Quantity A: \(x^2 + 2x + 1\)
Quantity B: \(x^2\)
• Quantity A is greater.
• Quantity B is greater.
• Both Quantities are Equal
• Cannot be determined
Quantity B: \(x^2\)
• Quantity A is greater.
• Quantity B is greater.
• Both Quantities are Equal
• Cannot be determined
Given:
Quantity A: x² + 2x + 1
Quantity B: x²
Subtract x² from both quantities to get:
Quantity A: 2x + 1
Quantity B: 0
Now let's test some values of x
Try x = 1
We get:
Quantity A: 2(1) + 1 = 3
Quantity B: 0
In this case, Quantity A is greater
Try x = -1
We get:
Quantity A: 2(-1) + 1 = -1
Quantity B: 0
In this case, Quantity B is greater
Answer: D
RELATED VIDEOS
GRE Math Challenge #95- x^2 + 2x + 1 or x^2
[#permalink]
12 Jul 2021, 07:21
12 Jul 2021, 07:21
Hello, I'm curious to know why you would not solve this by factoring (x-1)2 for A and x2 for B? Could you please explain how?
