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# Find the value

Author Message
Intern
Joined: 28 Apr 2017
Posts: 4

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14 Aug 2018, 20:23
00:00

Difficulty:

(N/A)

Question Stats:

100% (00:32) correct 0% (00:00) wrong based on 3 sessions

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Find the value of x = (-5^2 - 5) + (2*3*(-5))

a) -10
b) 60
c) 50
d) -60
e) 10
Manager
Status: Started with mock tests,Kaplan and manhattan score's below
Joined: 11 Jun 2017
Posts: 110
Location: India
GMAT 1: 630 Q44 V33
GMAT 2: 680 Q47 V37
GPA: 3.2

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14 Aug 2018, 20:46
anuishp wrote:
Find the value of x = (-5^2 - 5) + (2*3*(-5))

a) -10
b) 60
c) 50
d) -60
e) 10

x=[(-5)^2 -5] +(2*3*-5)
= (25-5)+(6*-5)
=20-30
=-10

Ans A.
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Thanks,
Ankit
Target Score:730+

If the post was useful,please send the kudos

Senior Manager
Joined: 22 Feb 2018
Posts: 411

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14 Aug 2018, 20:50
anuishp wrote:
Find the value of x = (-5^2 - 5) + (2*3*(-5))

a) -10
b) 60
c) 50
d) -60
e) 10

anuishp pls update OA and source of the question, if possible.
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Good, good Let the kudos flow through you

Intern
Joined: 28 Apr 2017
Posts: 4

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14 Aug 2018, 20:57
Princ wrote:
anuishp wrote:
Find the value of x = (-5^2 - 5) + (2*3*(-5))

a) -10
b) 60
c) 50
d) -60
e) 10

This question is made up. It is very similar to a problem I saw on the official GMAT, with the main kicker being the -5^2 ... I don't have the OA and I was stumped by this question on the test
Senior DS Moderator
Joined: 27 Oct 2017
Posts: 1123
Location: India
GPA: 3.64
WE: Business Development (Energy and Utilities)

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14 Aug 2018, 21:06
1
x = (-5^2-5) +(2*3(-5))
= (-25-5) +(-30)
= -30-30
= -60

Trap (-5)^2 = (-5)*(-5) = 25, but -5^2 = -(5*5)= -25

anuishp wrote:
Find the value of x = (-5^2 - 5) + (2*3*(-5))

a) -10
b) 60
c) 50
d) -60
e) 10

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Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 4277
Location: India
GPA: 3.5

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14 Aug 2018, 21:39
[quote="anuishp"]Find the value of [m]x = (-5^2 - 5) + (2*3*(-5)[/m]

a) -10
b) 60
c) 50
d) -60
e) 10[/quote]

[m]x = (-5^2 - 5) + (2*3*(-5))[/m]

Or, [m]x = (a^2 + a) + (2*3*(a))[/m] If u take a = -5 Here it is -(a)^2+a + 2*3*a

Or, [m]x = (a^2 + a+ 6a)[/m]

Or, [m]x = (a^2 +7a)[/m]

Or, [m]x = a(a + 7)[/m]

Or, [m]x = -5(-5 + 7)[/m]

[b][color=#00a651]Or, [m]x = -10[/m], Answer must be (A)[/color][/b]
Find the value &nbs [#permalink] 14 Aug 2018, 21:39
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