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What is the value of x^2 + 4y ?

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Senior DS Moderator
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D
Joined: 27 Oct 2017
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What is the value of x^2 + 4y ?  [#permalink]

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New post 01 Nov 2018, 08:54
1
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

83% (00:47) correct 17% (00:41) wrong based on 42 sessions

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Manager
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S
Joined: 08 Sep 2008
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Re: What is the value of x^2 + 4y ?  [#permalink]

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New post 01 Nov 2018, 08:59
St-1:
x = 3 ( No value of y is given ) Not sufficient
St-2
x^2 + 2y = 17
two variable one equation cannot calculate value of x^2 + 4y.
Combine: Two variable two equation, Now we can find out value.
Sufficient.
C
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Re: What is the value of x^2 + 4y ?  [#permalink]

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New post 07 Nov 2018, 07:34
gmatbusters wrote:
What is the value of x^2 + 4y ?
(1) x = 3
(2) x^2 + 2y = 17


I think answer should be C. Can you please confirm?
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Re: What is the value of x^2 + 4y ?  [#permalink]

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New post 07 Nov 2018, 07:43
Yes answer is C.

Thanks

KS15 wrote:
gmatbusters wrote:
What is the value of x^2 + 4y ?
(1) x = 3
(2) x^2 + 2y = 17


I think answer should be C. Can you please confirm?


Posted from my mobile device
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What is the value of x^2 + 4y ?  [#permalink]

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New post 08 Nov 2018, 10:11
why B is not sufficient?
x^2 +2y=17, here only x^2=9 satisfies the equation, which gives the value of y as 4.
we are not worried about the sign of x, as it is square
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What is the value of x^2 + 4y ? &nbs [#permalink] 08 Nov 2018, 10:11
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