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by smackmartine » Sat Jan 21, 2012 7:18 pm
IMO E
(sqrt(17+sqrt(264))) = sqrt(a)+sqrt(b)

squaring both sides

17+sqrt(2*2*6*11) = a+b+2*sqrt(a*b)

11+6+2*sqrt(11*6)=a+b+2*sqrt(a*b)

from equation above it's clear that a = 11 and b= 6

So a-b = 11-6 = 5
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by pemdas » Sun Jan 22, 2012 12:05 pm
OA E, 5
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