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x^2+y^2 = 0

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san
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x^2+y^2 = 0 [#permalink] New post   Updated on: 19 Oct 2017, 00:12
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\(x^2 + y^2 = 0\)

Quantity A
Quantity B
x
0



(A) The quantity in Column A is greater.
(B) The quantity in Column B is greater.
(C) The two quantities are equal.
(D) The relationship cannot be determined from the information given.
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Official Answer
C

Originally posted by san on 18 Oct 2017, 21:24.
Last edited by IlCreatore on 19 Oct 2017, 00:12, edited 4 times in total.
Renamed the topic and edited the question.
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Bunuel
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Re: Squares [#permalink] New post   18 Oct 2017, 22:42
san wrote:
x^2+y^2 = 0
Qty A: x Qty B:0


Please follow the rules when posting a question: rules-for-posting-please-read-this-before-posting-1083.html
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Bunuel
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Re: x^2+y^2 = 0 [#permalink] New post   18 Oct 2017, 22:45
2
san wrote:
x^2 + y^2 = 0

Quantity A
Quantity B
x
0



(A) The quantity in Column A is greater.
(B) The quantity in Column B is greater.
(C) The two quantities are equal.
(D) The relationship cannot be determined from the information given.


The square of a number is always non-negative, so 0 or positive.

So, we have that the sum of two non-negative values is 0, which is only possible if both numbers are 0.

x^2 = y^2 = 0;
x = y = 0.

Answer: C.
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gmatclubot
Re: x^2+y^2 = 0 [#permalink]
18 Oct 2017, 22:45
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