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Any approach other than Picking numbers??

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Any approach other than Picking numbers??

by adi_800 » Sat Oct 08, 2011 11:31 pm
If a and n are positive numbers, does 2a^x = n ?

(1) a^x + 1/a^x = Sqrt(n+2)

(2) x > 0
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by shankar.ashwin » Mon Oct 10, 2011 12:06 am
C IMO
adi_800 wrote:If a and n are positive numbers, does 2a^x = n ?

(1) a^x + 1/a^x = Sqrt(n+2)

(2) x > 0
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