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GMAT Prep - Radicals Square Root - weird

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by givemeanid » Mon Sep 03, 2007 6:38 pm
Square root of a negative number is not a real number. It is an imaginary number but GMAT does not deal with those.

So, sqrt(2-sqrtx) will not be defined when sqrt(x) > 2 which would make the number inside the radical negative. sqrt(5) > 2 and hence, the result.
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