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# What is the value of x? 1) (-x)^3 = -(x^3) 2) (-x)^2 = -(x^2

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VP
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What is the value of x? 1) (-x)^3 = -(x^3) 2) (-x)^2 = -(x^2 [#permalink]

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08 Oct 2008, 23:35
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What is the value of x?

1) (-x)^3 = -(x^3)
2) (-x)^2 = -(x^2)
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"You have to find it. No one else can find it for you." - Bjorn Borg

Manager
Joined: 10 Aug 2008
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Re: DS : Good One [#permalink]

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09 Oct 2008, 03:08
Fisrt Eq can be satisfied for any Interger Value of X, so a definate value of X is not determined.

2nd Eq can be onyl satisfy for x= 0. So 2nd alone is Good enough.

BTW whats the Ans ?
VP
Joined: 30 Jun 2008
Posts: 1034
Followers: 14

Kudos [?]: 613 [0], given: 1

Re: DS : Good One [#permalink]

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09 Oct 2008, 03:09
AmitGUPTA wrote:
Fisrt Eq can be satisfied for any Interger Value of X, so a definate value of X is not determined.

2nd Eq can be onyl satisfy for x= 0. So 2nd alone is Good enough.

BTW whats the Ans ?

OA is B
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VP
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Re: DS : Good One [#permalink]

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09 Oct 2008, 03:47
amitdgr wrote:
What is the value of x?

1) (-x)^3 = -(x^3)
2) (-x)^2 = -(x^2)

IMO B
x=0 is the only value when 2 is true

1 is true for any -ve value of x
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Re: DS : Good One   [#permalink] 09 Oct 2008, 03:47
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# What is the value of x? 1) (-x)^3 = -(x^3) 2) (-x)^2 = -(x^2

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