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a<0 and b<0
[#permalink]
Updated on: 03 Oct 2022, 01:34
Updated on: 03 Oct 2022, 01:34
Expert Reply
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Question Stats:
35% (00:45) correct
64% (00:43) wrong based on 42 sessions
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a<0 and b<0
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
\( [a+b]\) |
\(\sqrt{[a+b]^2}\) |
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
Part of the Skill Builder Project
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GRE Math Essentials
GRE Geometry Formulas
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials
GRE Geometry Formulas
GRE - Math Book
Re: a<0 and b<0
[#permalink]
03 Oct 2022, 00:38
03 Oct 2022, 00:38
1
Hi Carcass, shouldn't its answer be C, because if a negative number is squared and then if we take its square root then the value should be negative.
And here we are doing the exactly same thing, a negative number is being squared and then its sq. root is taken.
And here we are doing the exactly same thing, a negative number is being squared and then its sq. root is taken.
Re: a<0 and b<0
[#permalink]
03 Oct 2022, 01:34
03 Oct 2022, 01:34
Expert Reply
mubashirusmanijaz wrote:
Hi Carcass, shouldn't its answer be C, because if a negative number is squared and then if we take its square root then the value should be negative.
And here we are doing the exactly same thing, a negative number is being squared and then its sq. root is taken.
And here we are doing the exactly same thing, a negative number is being squared and then its sq. root is taken.
Clearly the question in its oA is wrong.
Maybe some typo in the book. I doubled check and the answer is still B. But it is not possible
QA is a+b
QB is also a+b because the power of two and root cancel out
C is the answer. Fixed accordingly
Thank you
