GMAT Question of the Day: Daily via email | Daily via Instagram New to GMAT Club? Watch this Video

 It is currently 18 Feb 2020, 23:25

### 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^2 + 2xy + y^2 = 25, then (x + y)^3 could be

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 61284
If x^2 + 2xy + y^2 = 25, then (x + y)^3 could be  [#permalink]

### Show Tags

27 Feb 2019, 23:13
00:00

Difficulty:

15% (low)

Question Stats:

86% (00:58) correct 14% (00:56) wrong based on 37 sessions

### HideShow timer Statistics

If x^2 + 2xy + y^2 = 25, then (x + y)^3 could be

A. 5
B. 15
C. 50
D. 75
E. 125

_________________
GMAT Club Legend
Joined: 18 Aug 2017
Posts: 5931
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
Re: If x^2 + 2xy + y^2 = 25, then (x + y)^3 could be  [#permalink]

### Show Tags

28 Feb 2019, 05:43
Bunuel wrote:
If x^2 + 2xy + y^2 = 25, then (x + y)^3 could be

A. 5
B. 15
C. 50
D. 75
E. 125

x^2 + 2xy + y^2 = 25
(x+y)^2 = 25
or say
x+y=5
so
(x+y)^3 = 125
IMO E
VP
Joined: 31 Oct 2013
Posts: 1491
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
Re: If x^2 + 2xy + y^2 = 25, then (x + y)^3 could be  [#permalink]

### Show Tags

28 Feb 2019, 11:20
Bunuel wrote:
If x^2 + 2xy + y^2 = 25, then (x + y)^3 could be

A. 5
B. 15
C. 50
D. 75
E. 125

$$x^2 + 2xy + y^2 = 25$$

$$(x + y)^2 = (5)^2$$

x + y = 5.

we are asked to determine the value of $$(x + y)^3$$.

$$(x + y)^3$$

$$(5)^3$$

125.

Re: If x^2 + 2xy + y^2 = 25, then (x + y)^3 could be   [#permalink] 28 Feb 2019, 11:20
Display posts from previous: Sort by