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Updated on: 31 Oct 2018, 22:00
Originally posted by GMATBusters on 31 Oct 2018, 09:47.
Last edited by Bunuel on 31 Oct 2018, 22:00, edited 1 time in total.
Last edited by Bunuel on 31 Oct 2018, 22:00, edited 1 time in total.
Renamed the topic and edited the question.
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A
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88% (00:22) correct
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31 Oct 2018, 13:53
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gmatbusters
Is the value of \(x^2 + xy\) equal to 0?
(1) x = 0
(2) y = 0
(1) x = 0
(2) y = 0
Pretty straightforward
x (x+y) if x = 0 then it is 0
Otherwise not necessarily.
Answer choice A
Posted from my mobile device
19 Apr 2020, 08:56
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Is the value of x2+xy equal to 0?
x2+xy = x(x+y)
(1) x = 0
so, x(x+y) = 0 sufficient
(2) y = 0
but no info about x. if x= 0. x2+xy equal to 0
if, x= 1, x2+xy not equal to 0 insufficient
correct answer A
x2+xy = x(x+y)
(1) x = 0
so, x(x+y) = 0 sufficient
(2) y = 0
but no info about x. if x= 0. x2+xy equal to 0
if, x= 1, x2+xy not equal to 0 insufficient
correct answer A
