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If x = -|w|, which of the following must be true

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Re: If x = -|w|, which of the following must be true  [#permalink]

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New post 18 Apr 2018, 07:17
ScottTargetTestPrep, JeffTargetTestPrep. Please explain how have you eliminated other options. Thanks.
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If x = -|w|, which of the following must be true  [#permalink]

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New post 17 Jul 2018, 19:01
Bunuel,
I couldn't understand OG explanation. Alternatively, if (x, w) is equal to either of the pairs (−1,1) or (−1,−1), then x = −|w| is true. However, each of the answer choices except x2 = w2 is false for at least one of these two pairs.

Could you explain me.

Thanks

adkikani , please try out this one
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New post 18 Dec 2018, 18:47
i just cannot seem to understand the rule of absolutes and always get these questions wrong. Just for absolutes, can someone recommend good studying source?
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New post 18 Dec 2018, 21:16
anum23 wrote:
i just cannot seem to understand the rule of absolutes and always get these questions wrong. Just for absolutes, can someone recommend good studying source?


10. Absolute Value



For more check Ultimate GMAT Quantitative Megathread


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Re: If x = -|w|, which of the following must be true  [#permalink]

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New post 13 Sep 2019, 22:05
nalinnair wrote:
If \(x = –|w|\), which of the following must be true?

A. \(x = –w\)
B. \(x = w\)
C. \(x^2 = w\)
D. \(x^2 = w^2\)
E. \(x^3 = w^3\)


Given: \(x = –|w|\)

Asked: Which of the following must be true?

\(x = –|w|\)
Taking square of both sides
\(x^2 = w^2\)

IMO D
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New post 10 Jan 2020, 04:30
nalinnair wrote:
If \(x = –|w|\), which of the following must be true?

A. \(x = –w\)
B. \(x = w\)
C. \(x^2 = w\)
D. \(x^2 = w^2\)
E. \(x^3 = w^3\)

w =-4 x=-4 X^2 =W^2 i.e 16
so D
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Re: If x = -|w|, which of the following must be true   [#permalink] 10 Jan 2020, 04:30

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