Last visit was: 04 Nov 2024, 13:28 It is currently 04 Nov 2024, 13:28

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.

Close

Request Expert Reply

Confirm Cancel
Manager
Manager
Joined: 26 Mar 2021
Posts: 82
Own Kudos [?]: 161 [3]
Given Kudos: 6
GMAT 1: 660 Q49 V31
GMAT 2: 660 Q48 V33
Send PM
Senior Manager
Senior Manager
Joined: 03 Dec 2020
Posts: 440
Own Kudos [?]: 60 [0]
Given Kudos: 68
Send PM
Retired Moderator
Joined: 02 Dec 2020
Posts: 1833
Own Kudos [?]: 2146 [1]
Given Kudos: 140
GRE 1: Q168 V157

GRE 2: Q167 V161
Send PM
avatar
Intern
Intern
Joined: 17 Jan 2022
Posts: 1
Own Kudos [?]: 1 [1]
Given Kudos: 0
Send PM
(x+40)^2 + (x-40)^2 [#permalink]
1
I think the answer is A.
when I solved the them, I got A = 2x^2 + 3200 and B = -160x.
Now, If we take x = 0 then, A>B because it would be 3200 and B = 0
another case if we take x = -10000
then A would be 2*(-10000)^2 + 3200
and B would be 1600000
and A is still greater than B.
Verbal Expert
Joined: 18 Apr 2015
Posts: 29887
Own Kudos [?]: 36105 [0]
Given Kudos: 25917
Send PM
Re: (x+40)^2 + (x-40)^2 [#permalink]
Expert Reply
if you test numbers such as 0,1,-1, or fractions such as 1/2 or -1/4 the result is different

D is the answer
Prep Club for GRE Bot
Re: (x+40)^2 + (x-40)^2 [#permalink]
Moderators:
GRE Instructor
77 posts
GRE Forum Moderator
37 posts
Moderator
1111 posts
GRE Instructor
228 posts

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