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PS Algebra

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25 Nov 2005, 10:59
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Director
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25 Nov 2005, 11:14
IMO the answer choices are not correct. 50 should be an option
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25 Nov 2005, 13:01
I got sqrt(50) = 5sqrt(2) so answer is D.

I will post my working as attachment.
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25 Nov 2005, 13:10
here is the workings as attachment.
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algebra_post_739.doc [23.5 KiB]

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25 Nov 2005, 13:20
D,

assume the values = x

then square on both side
x^2= 48+2sprt(24^2-25*23)
x^2 = 48+2sprt(24^2-24^2+1^2)

x^2= 48+2*1=50=5sqrt(2)
Current Student
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26 Nov 2005, 04:19
Yep, OA is D. Consider this an all time ETS classic.
26 Nov 2005, 04:19
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