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Which of the following are solutions to 2x^3 + 2 = 5x − x^2
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28 Oct 2020, 06:37
28 Oct 2020, 06:37
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Question Stats:
44% (01:58) correct
56% (01:44) wrong based on 25 sessions
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Which of the following are solutions to \(2x^3 + 2 = 5x − x^2\)
Indicate all such solutions.
A. \(−2\)
B. \(−1\)
C. \(− \frac{1}{2}\)
D. \(0 \)
E. \(\frac{1}{2}\)
F. \(1\)
G. \(2\)
Source: 320 GRE Math Questions
Indicate all such solutions.
A. \(−2\)
B. \(−1\)
C. \(− \frac{1}{2}\)
D. \(0 \)
E. \(\frac{1}{2}\)
F. \(1\)
G. \(2\)
Source: 320 GRE Math Questions
Re: Which of the following are solutions to 2x^3 + 2 = 5x − x^2
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30 Oct 2020, 02:24
30 Oct 2020, 02:24
1
I solve it by plugging back the answer choices and quick elimination
Since -2 works 2 can't work
Since 1 works -1 can't work
And since -1/2 works the 1/2 can't
Posted from my mobile device
Since -2 works 2 can't work
Since 1 works -1 can't work
And since -1/2 works the 1/2 can't
Posted from my mobile device
gmatclubot
Re: Which of the following are solutions to 2x^3 + 2 = 5x − x^2 [#permalink]
30 Oct 2020, 02:24
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