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Sum of roots of the equation x2 – 4x – 5 = 0 or 2
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10 Feb 2022, 12:21
10 Feb 2022, 12:21
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Quantity A |
Quantity B |
\(\)Sum of roots of the equation \(x^2 – 4x – 5 = 0 \) |
\(2\) |
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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Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: Sum of roots of the equation x2 – 4x – 5 = 0 or 2
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10 Feb 2022, 12:32
10 Feb 2022, 12:32
1
Asif789 wrote:
Quantity A |
Quantity B |
\(\)Sum of roots of the equation \(x^2 – 4x – 5 = 0 \) |
\(2\) |
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
Take: \(x^2 – 4x – 5 = 0 \)
Factor: \((x–5)(x+1)= 0 \)
So, either \(x = 5\) or \(x = -1\), which means the sum of the roots \(= 5 + (-1) = 4\)
We have:
QUANTITY A: 4
QUANTITY B: 2
Answer: A
Intern
Joined: 02 Dec 2020
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GRE 1: Q167 V162
GRE 2: Q165 V164
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Re: Sum of roots of the equation x2 – 4x – 5 = 0 or 2
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11 Feb 2022, 02:05
11 Feb 2022, 02:05
GreenlightTestPrep wrote:
Asif789 wrote:
Quantity A |
Quantity B |
\(\)Sum of roots of the equation \(x^2 – 4x – 5 = 0 \) |
\(2\) |
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
Take: \(x^2 – 4x – 5 = 0 \)
Factor: \((x–5)(x+1)= 0 \)
So, either \(x = 5\) or \(x = -1\), which means the sum of the roots \(= 5 + (-1) = 4\)
We have:
QUANTITY A: 4
QUANTITY B: 2
Answer: A
Hi Asif789, refer to this - Good explanation.
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