Last visit was: 27 Dec 2024, 05:46 It is currently 27 Dec 2024, 05:46
Decision Tracker
My Rewards
New comers' posts
New posts
Unanswered

Close

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

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

Track
Your Progress

every week, we’ll send you an estimated GRE 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.

Go to My Error Log Learn more
Close

Request Expert Reply

Confirm Cancel
PREVIOUS TOPIC
NEXT TOPIC

y^2+25

Tags :
Find Similar Topics  About  Add a Tag

Show Tags
Hide Tags

User avatar
D
Carcass
Verbal Expert
Joined: 18 Apr 2015
Posts: 30515
Own Kudos [?]: 36884 [0]
Given Kudos: 26112
Send PM
y^2+25 [#permalink] New post   24 Sep 2018, 10:15
Expert Reply
00:00

Question Stats:

48% (00:39) correct 51% (00:17) wrong based on 31 sessions

Hide Show timer Statistics

Quantity A
Quantity B
\(y^2 +25\)
\(( y-5)(y-5)\)


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.
ShowHide Answer
Official Answer
D
avatar
ARIJOSHI
Intern
Intern
Joined: 07 Jan 2019
Posts: 38
Own Kudos [?]: 45 [0]
Given Kudos: 0
Send PM
Re: y^2+25 [#permalink] New post   14 Jan 2019, 07:40
Quantity A = y^2 + 25

Quantity B = ( y - 5) ( y - 5)
= y^2 - 5y - 5y + 25
= y^2 + 25 - 10y

Since the value of y can be of any positive, negative or zero numbers, the answer is D.
avatar
chetan2u
Supreme Moderator
Joined: 01 Nov 2017
Posts: 371
Own Kudos [?]: 471 [0]
Given Kudos: 0
Send PM
Re: y^2+25 [#permalink] New post   14 Jan 2019, 19:17
Expert Reply
Carcass wrote:
Quantity A
Quantity B
\(y^2 +25\)
\(( y-5)(y-5)\)


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.



A= \(y^2+25\)
B=\((y-5)^2=y^2+25-10y=A-10y\)

If y is 0, both are equal
If y >0, A is greater
IF Y<0, B is greater.

D
User avatar
P
GreenlightTestPrep
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Own Kudos [?]: 12238 [0]
Given Kudos: 136
Send PM

Top Member of the Month
Re: y^2+25 [#permalink] New post   15 Jan 2019, 06:26
Carcass wrote:
Quantity A
Quantity B
\(y^2 +25\)
\(( y-5)(y-5)\)


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.


We can solve this question using matching operations

Given:
Quantity A: y² + 25
Quantity B: (y-5)(y-5)

Use F.O.I.L. to expand and simplify Quantity B:
Quantity A: y² + 25
Quantity B: y² - 10y + 25

Subtract y² from both quantities to get:
Quantity A: 25
Quantity B: -10y + 25

Subtract 25 from both quantities to get:
Quantity A: 0
Quantity B: -10y

At this point, we can see that,....
If y = 0, then the two quantities are equal
If y = 1, then Quantity A is greater
If y = -1, then Quantity B is greater

Answer: D

RELATED VIDEO FROM OUR COURSE
Prep Club for GRE Bot
gmatclubot
Re: y^2+25 [#permalink]
15 Jan 2019, 06:26
Moderators:
adewale223
GRE Instructor
88 posts
bronaugust
GRE Forum Moderator
37 posts
BrushMyQuant
Moderator
1115 posts
VibhuAnurag
GRE Instructor
234 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Main navigation

Partners

GRE Resources

www.ets.org/gre | About | Terms and Conditions and Privacy Policy | Prep Club for GRE Rules | Contact