Sorry guys, why cant we approach in the following way?
x^3+x^2=2x
=> x^2+x=2
=> x(x+1)=2
=> x is either -2 or 1.
Then using the other piece of data (x<>-2) we can draw the conclusion that x=1
Hence C is the answer.
GMAT Forum
- by ankeetbajaj
- Thu Nov 18, 2010 8:36 am
- Forum: GMAT Official Practice Test Math
- Topic: Is x=1 data sufficiency Q
- Replies: 8
- Views: 2327
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- by ankeetbajaj
- Fri Nov 19, 2010 5:26 am
- Forum: GMAT Official Practice Test Math
- Topic: Is x=1 data sufficiency Q
- Replies: 8
- Views: 2327
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Re: Is x=1 data sufficiency Q
Thanks Atul. That clarifies.
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