|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
10 Dec 2024, 23:29
Kudos
Bookmarks
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
90% (00:50) correct
9% (00:37) wrong based on 11 sessions
History
Date
Time
Result
Not Attempted Yet
If 8 and -4 are the solutions for x, which of the following could be the equation?
(A) \(x^2 - 4x - 32 = 0\)
(B) \(x^2 - 4x + 32 = 0\)
(C) \(x^2 + 4x - 12 = 0\)
(D) \(x^2 + 4x + 32 = 0\)
(E) \(x^2 + 4x + 12 = 0\)
(A) \(x^2 - 4x - 32 = 0\)
(B) \(x^2 - 4x + 32 = 0\)
(C) \(x^2 + 4x - 12 = 0\)
(D) \(x^2 + 4x + 32 = 0\)
(E) \(x^2 + 4x + 12 = 0\)
13 Dec 2024, 12:09
Kudos
Bookmarks
The long way will be to put 8 and -4 in each and see whether thats right.
Another way would be to see the factors
Option C and Option E is -12 and 12
C. SO -12 will be broken as
x^2 +6x - 2x + 12 = No way 8 can be a factor so it is out
E. 12 cannot be broken in a way such that the two factors add upto 4 so thats out
Now we have 32
-32 and +32
+32 is not possible as no two factors of 32 can add upto 4 or -4
Only option is A
A. x^2−4x−32=0
X^2-8x+4x-32=0
x(x-8)+4(x-8)=0
(x+4)(x-8)
= -4 and 8
Another way would be to see the factors
Option C and Option E is -12 and 12
C. SO -12 will be broken as
x^2 +6x - 2x + 12 = No way 8 can be a factor so it is out
E. 12 cannot be broken in a way such that the two factors add upto 4 so thats out
Now we have 32
-32 and +32
+32 is not possible as no two factors of 32 can add upto 4 or -4
Only option is A
A. x^2−4x−32=0
X^2-8x+4x-32=0
x(x-8)+4(x-8)=0
(x+4)(x-8)
= -4 and 8
28 Feb 2025, 12:36
Kudos
Bookmarks
OE
If the solutions to the equation are 8 and -4, the factored form of the equation is:
\((x - 8)(x + 4) = 0\)
Distributed, this equals: \(x^2 - 4x - 32 = 0.\)
Answer: A
If the solutions to the equation are 8 and -4, the factored form of the equation is:
\((x - 8)(x + 4) = 0\)
Distributed, this equals: \(x^2 - 4x - 32 = 0.\)
Answer: A
