Is ?

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Source: — Data Sufficiency |

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by bharathh » Sat Sep 05, 2009 5:07 pm
I cannot view it. I don't use MS Word 2007.

Can you not copy paste the text here?

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by capnx » Sat Sep 05, 2009 5:17 pm
here ya go

I think it's D
square both sides, (x-3)(x-3) = (3-x)(3-x)
simplify: x^2 - 6x + 9 = 9 - 6x + x^2
seems to always equal...
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by bharathh » Sat Sep 05, 2009 5:28 pm
E IMO

Statement 1 is not sufficient

f x = 0

sqrt((-3)^2) = 3
sqrt(9) = 3

but sqrt 9 = -3 or 3

Statement 2 suggest that x will be a negative number as other wise -x.|x| cannot be greater than 0

if x = -3
sqrt((-3-3)^2) = 3- (-3)
sqrt(36) = 6

Statement 2 is no good as the LHS can be -6 or 6

Both statements bring us to the same conclusion. So C is out as well. E

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It's D

by enniguy » Sat Sep 05, 2009 8:32 pm
I think it's D too. Whats the OA?