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Re: If |x+2|=4, what is the value of x ? [#permalink]

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08 Jul 2013, 15:46

If |x+2|=4, what is the value of x ? x=2, x=-6

(1) x^2 is different from 4 x^2 is different from 4 (The wording is a bit ambiguous, but I take it to mean that x^2 DOESN'T EQUAL 4) we have two values for x, x=-6 and x=2. When x=2, then x^2 = 4 which is invalid. When x=-6 then x^2 = 36 which is valid. x=6 SUFFICIENT

(2) x^2 = 36 x=-6, x=6 (plug both x values into the stem) |x+2|=4 |-6+2|=4 |-4|=4 4=4 VALID |x+2|=4 |6+2|=4 |8|=4 8=4 INVALID

Re: If |x+2|=4, what is the value of x ? [#permalink]

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21 Dec 2014, 06:16

Hello from the GMAT Club BumpBot!

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Re: If |x+2|=4, what is the value of x ? [#permalink]

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18 Sep 2016, 04:13

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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