Again, not sure how this can be done..
Please help..
GMAT Prep - Modulus & Square Roots
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Yes it is the answer. However, not sure whether it's ok to stop the moment you get square root of a negative number.
A detailed explanation would really help here..
A detailed explanation would really help here..
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Actualy, it's ok to stop, 'cause root of a negative is not a real number, therefore the whole expresion is not a real number.aditikedia wrote:Yes it is the answer. However, not sure whether it's ok to stop the moment you get square root of a negative number.
A detailed explanation would really help here..
Answer is E.
The square root of a negative number is not a real number.
In GMAT I think you should stop as soon as you see a square root of a negative number since GMAT does not deal with imaginary numbers etc...
The square root of a negative number is not a real number.
In GMAT I think you should stop as soon as you see a square root of a negative number since GMAT does not deal with imaginary numbers etc...
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IF you solve only sqroot(2- sqroot x) part it is enough
take X to be 5. which is 2.23
sqroot ( 2- sqroot 5)
sqroot ( 2- 2.23)
sqrt( -0.23)
As sq root of a negative number is non real. the answer shud be 5.
hope it helps..
take X to be 5. which is 2.23
sqroot ( 2- sqroot 5)
sqroot ( 2- 2.23)
sqrt( -0.23)
As sq root of a negative number is non real. the answer shud be 5.
hope it helps..