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x^2+8x=-7
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24 May 2023, 06:12
24 May 2023, 06:12
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Question Stats:
73% (00:44) correct
26% (02:01) wrong based on 38 sessions
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\(x^2+8x=-7\)
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.
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Quantity A |
Quantity B |
x |
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.
Post A Detailed Correct Solution For The Above Questions And Get A Kudos.
Question From Our Project: Free GRE Prep Club Tests in Exchange for 20 Kudos
\(\Longrightarrow\) Cracking the GRE Premium
\(\Longrightarrow\) GRE Math Essentials - A most comprehensive handout!!
x^2+8x=-7
[#permalink]
28 May 2023, 09:37
28 May 2023, 09:37
Expert Reply
\(x^2+8x+7=0\)
Factor out
\((x+7)(x+1)\)
x=-7
x=-1
both are negative and QB is zero
B>A
Factor out
\((x+7)(x+1)\)
x=-7
x=-1
both are negative and QB is zero
B>A
Re: x^2+8x=-7
[#permalink]
04 Aug 2024, 01:04
04 Aug 2024, 01:04
1
The question stem says x^2 + 8x = -7, so shouldn't the quadratic equation then be, x^2 + 8x + 7 = 0.
This would then yield the answer for x = 1, 7
Hence, shouldn't Quantity A > Quantity B?
This would then yield the answer for x = 1, 7
Hence, shouldn't Quantity A > Quantity B?
