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# What is the value of the expression x(x−1)^5 when x=−1?

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Math Expert
Joined: 02 Sep 2009
Posts: 52431
What is the value of the expression x(x−1)^5 when x=−1?  [#permalink]

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13 Apr 2018, 02:31
00:00

Difficulty:

15% (low)

Question Stats:

90% (00:31) correct 10% (00:59) wrong based on 39 sessions

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What is the value of the expression x(x−1)^5 when x=−1?

A. -64
B. -32
C. -16
D. 32
E. 64

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Joined: 31 Oct 2013
Posts: 1014
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
Re: What is the value of the expression x(x−1)^5 when x=−1?  [#permalink]

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13 Apr 2018, 03:01
Bunuel wrote:
What is the value of the expression x(x−1)^5 when x=−1?

A. -64
B. -32
C. -16
D. 32
E. 64

Given that x=-1

x(x-1)^5
=(-1) (-1-1)^5
=(-1)*(-32)
=32 which is option D.

Re: What is the value of the expression x(x−1)^5 when x=−1? &nbs [#permalink] 13 Apr 2018, 03:01
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