It is currently 31 Oct 2020, 01:26

### GMAT 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 GMAT score based on your performance

Practice
Pays

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

# If 3x – 4 = 11, what is the value of (3x – 4)^2

 Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:
Active Member
Joined: 07 Jan 2018
Posts: 694
Followers: 11

Kudos [?]: 778 [1] , given: 88

If 3x – 4 = 11, what is the value of (3x – 4)^2 [#permalink]  02 Sep 2018, 21:15
1
This post received
KUDOS
00:00

Question Stats:

100% (00:16) correct 0% (00:00) wrong based on 26 sessions
If 3x – 4 = 11, what is the value of $$(3x – 4)^2$$

A)22
B)36
C)116
D)121
E)256
[Reveal] Spoiler: OA
Intern
Joined: 28 Aug 2018
Posts: 28
GRE 1: Q170 V166
WE: Other (Education)
Followers: 1

Kudos [?]: 30 [1] , given: 0

Re: If 3x – 4 = 11, what is the value of (3x – 4)^2 [#permalink]  03 Sep 2018, 12:50
1
This post received
KUDOS
$$3x-4=11$$, then $$(3x-4)^2=11^2=121$$
_________________

Yuan Liu, Creator of Gregory. Dartmouth Grad.

For More GRE Math Resources

GRE Instructor
Joined: 10 Apr 2015
Posts: 3876
Followers: 159

Kudos [?]: 4683 [1] , given: 70

Re: If 3x – 4 = 11, what is the value of (3x – 4)^2 [#permalink]  04 Sep 2018, 10:45
1
This post received
KUDOS
Expert's post
amorphous wrote:
If 3x – 4 = 11, what is the value of $$(3x – 4)^2$$

A)22
B)36
C)116
D)121
E)256

Approach #1 (fast)
Given: 3x – 4 = 11
Square each side to get: (3x – 4)² = 11²
Evaluate right side to get: (3x – 4)² = 121
Answer: D

Approach #2 (slow)
Given: 3x – 4 = 11
Add 4 to both sides: 3x = 15
Solve: x = 5

So, (3x – 4)² = [3(5) – 4]²
= (15 - 4)²
= (11)²
= 121
Answer: D
_________________

Brent Hanneson – Creator of greenlighttestprep.com
If you enjoy my solutions, you'll like my GRE prep course.

Sign up for GRE Question of the Day emails

Manager
Joined: 06 Jun 2018
Posts: 94
Followers: 2

Kudos [?]: 80 [0], given: 0

Re: If 3x – 4 = 11, what is the value of (3x – 4)^2 [#permalink]  07 Sep 2018, 19:28
amorphous wrote:
If 3x – 4 = 11, what is the value of $$(3x – 4)^2$$

A)22
B)36
C)116
D)121
E)256

Given,

3x - 4 = 11

$$(3x - 4)^2 = 11^2$$

$$(3x - 4)^2 = 121$$

The best answer is B.
Re: If 3x – 4 = 11, what is the value of (3x – 4)^2   [#permalink] 07 Sep 2018, 19:28
Display posts from previous: Sort by

# If 3x – 4 = 11, what is the value of (3x – 4)^2

 Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.