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## Constants

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rajatvmittal Really wants to Beat The GMAT!
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Constants Tue Mar 13, 2012 7:51 am
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• Lap #[LAPCOUNT] ([LAPTIME])
if b,c,d are constants and x2+bx+c=(x+d)2 (2 is square)for all values of x, what is value of c?
a) d=3
b) b=6

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killer1387 GMAT Destroyer!
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Tue Mar 13, 2012 8:35 am
rajatvmittal wrote:
if b,c,d are constants and x2+bx+c=(x+d)2 (2 is square)for all values of x, what is value of c?
a) d=3
b) b=6
x2+bx+c=(x+d)^2 for all x
hence
b=2d and c=d^2
1) sufficient
2) sufficient

hence D

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