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Updated on: 10 Jul 2019, 23:48
Originally posted by Bunuel on 17 Apr 2019, 21:52.
Last edited by Sajjad1994 on 10 Jul 2019, 23:48, edited 1 time in total.
Last edited by Sajjad1994 on 10 Jul 2019, 23:48, edited 1 time in total.
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
87% (01:30) correct
13%
(02:11)
wrong
based on 101
sessions
History
Date
Time
Result
Not Attempted Yet
(x – 2)(x + 4) – (x – 3)(x – 1) = 0
(A) –5
(B) –1
(C) 0
(D) 1/2
(E) 11/6
(A) –5
(B) –1
(C) 0
(D) 1/2
(E) 11/6
Source: Nova GMAT
Difficulty Level: 550
Difficulty Level: 550
18 Apr 2019, 04:32
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The approach is simple, just use the FOIL method and then subtract both the sides.
FOIL for (x-2)(x+4) = x^2 + 4x - 2x - 8 = x^2 + 2x - 8
FOIL for (x-3)(x-1) = x^2 - x - 3x + 3 = x^2 - 4x + 3
Substituting them in the equation
(x^2 + 2x - 8) - (x^2 - 4x + 3) = 0
6x - 11 = 0
6x = 11
x = 11 / 6
Hence the answer is option (C)
FOIL for (x-2)(x+4) = x^2 + 4x - 2x - 8 = x^2 + 2x - 8
FOIL for (x-3)(x-1) = x^2 - x - 3x + 3 = x^2 - 4x + 3
Substituting them in the equation
(x^2 + 2x - 8) - (x^2 - 4x + 3) = 0
6x - 11 = 0
6x = 11
x = 11 / 6
Hence the answer is option (C)
vargamartin1031
Joined: 11 Apr 2019
Last visit: 19 Feb 2020
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Schools: IE MiF "21 (A)
19 Apr 2019, 05:34
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danz1ka19
You mean E, right?
