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# If x = -3, what is the value of -3(x^2) ?

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Math Expert
Joined: 02 Sep 2009
Posts: 50610
If x = -3, what is the value of -3(x^2) ?  [#permalink]

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16 Sep 2018, 21:18
00:00

Difficulty:

5% (low)

Question Stats:

95% (00:10) correct 5% (00:17) wrong based on 39 sessions

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If x = -3, what is the value of $$-3(x^2)$$ ?

A. -27

B. -18

C. 18

D. 27

E. 81

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Senior Manager
Joined: 18 Jul 2018
Posts: 374
Location: India
Concentration: Finance, Marketing
WE: Engineering (Energy and Utilities)
Re: If x = -3, what is the value of -3(x^2) ?  [#permalink]

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16 Sep 2018, 21:21
Substituting the value of x in the given equation.

$$x^2$$ = $$-3^2$$ = 9.

-3*9 = -27

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Joined: 22 Jan 2018
Posts: 44
Concentration: Operations, Technology
GMAT 1: 620 Q44 V31
GPA: 4
If x = -3, what is the value of -3(x^2) ?  [#permalink]

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16 Sep 2018, 21:23
Bunuel wrote:
If x = -3, what is the value of $$-3(x^2)$$ ?

A. -27

B. -18

C. 18

D. 27

E. 81

(-3)*(-3)^2
= (-3)*9
= -27

Manager
Joined: 18 Aug 2017
Posts: 211
Concentration: Healthcare, Marketing
Re: If x = -3, what is the value of -3(x^2) ?  [#permalink]

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16 Sep 2018, 21:26
If x = -3, what is the value of −3(x2)−3(x2) ?

A. -27

B. -18

C. 18

D. 27

E. 81

x=-3; -3(-3)2
=> -27 , A
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Posts: 147
Location: India
Concentration: Strategy, Real Estate
Schools: Johnson '21
Re: If x = -3, what is the value of -3(x^2) ?  [#permalink]

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16 Sep 2018, 22:15
If x = -3, what is the value of −3(x2)

Substitute -3 in the place of x

=-3(-3^2)
=-3(9)
=-27

Re: If x = -3, what is the value of -3(x^2) ? &nbs [#permalink] 16 Sep 2018, 22:15
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# If x = -3, what is the value of -3(x^2) ?

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