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# What is the value of x?

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Magoosh GMAT Instructor
Joined: 28 Dec 2011
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What is the value of x? [#permalink]

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11 Feb 2013, 12:25
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Question Stats:

72% (01:44) correct 28% (01:43) wrong based on 158 sessions

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What is the value of x?

Statement #1: $$(x^2+3)^2 - 11(x^2+3) + 28 = 0$$

Statement #2: $$x^2 + x - 2 = 0$$

For more discussion about simplifying complex expressions, such as those found in Statement #1, as well as a full solution of this DS, please see:
http://magoosh.com/gmat/2013/simplifyin ... -the-gmat/

Mike
[Reveal] Spoiler: OA

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Re: What is the value of x? [#permalink]

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11 Feb 2013, 12:49
Here as soon as you see that you can't find a precise value (the 1# has $$x^4$$ the 2# has $$x^2$$) even combined the 2 stats the answer is clearly E

Regards Mike
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Re: What is the value of x? [#permalink]

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11 Feb 2013, 19:29
Statement #1: Reduces to (x^4 -1)(x^2-1) = 0 Since we have multiple values for x insufficient.
Statement #2: Reduces to (x+2)(x-1) = 0. Again multiple values insufficient.

Combined statements also leave you with multiple values of x.

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Re: What is the value of x? [#permalink]

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02 Jan 2018, 04:36
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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Re: What is the value of x?   [#permalink] 02 Jan 2018, 04:36
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