It is currently 26 Mar 2019, 04:26

### 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

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 (x + 3)2 = 225, which of the following could be the value

Author Message
TAGS:
GRE Prep Club Legend
Joined: 07 Jun 2014
Posts: 4857
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 105

Kudos [?]: 1783 [0], given: 397

If (x + 3)2 = 225, which of the following could be the value [#permalink]  17 Jul 2018, 11:37
Expert's post
00:00

Question Stats:

37% (00:11) correct 62% (01:20) wrong based on 8 sessions
If $$(x + 3)^2 = 225$$, which of the following could be the value of $$x - 1$$?

(A) 13
(B) 12
(C) –12
(D) –16
(E) –19
[Reveal] Spoiler: OA

_________________

Sandy
If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test

Manager
Joined: 06 Jun 2018
Posts: 94
Followers: 0

Kudos [?]: 58 [0], given: 0

Re: If (x + 3)2 = 225, which of the following could be the value [#permalink]  18 Jul 2018, 12:25
sandy wrote:
If $$(x + 3)^2 = 225$$, which of the following could be the value of $$x - 1$$?

(A) 13
(B) 12
(C) –12
(D) –16
(E) –19

Given

$$(x + 3)^2$$ = 225

x + 3 = 15 or -15

Note: 15*15 =225 or -15*(-15) =225

So we will have 2 sets of values here.

Case 1 :

x + 3 = 15

x = 12

Case 2 :

x + 3 = -15

x = -18.

Question : the value of x-1.

-18 -1 = -19

Option E fits.
Re: If (x + 3)2 = 225, which of the following could be the value   [#permalink] 18 Jul 2018, 12:25
Display posts from previous: Sort by