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# (x-1)

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Moderator
Joined: 18 Apr 2015
Posts: 5811
Followers: 93

Kudos [?]: 1138 [0], given: 5418

(x-1) [#permalink]  14 May 2018, 12:22
Expert's post
00:00

Question Stats:

100% (00:26) correct 0% (00:00) wrong based on 10 sessions
 Quantity A Quantity B $$(x-1)(x+1)$$ $$x^2$$

A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

_________________
Director
Joined: 07 Jan 2018
Posts: 597
Followers: 7

Kudos [?]: 537 [1] , given: 88

Re: (x-1) [#permalink]  15 May 2018, 08:52
1
KUDOS
use foil to expand qty A
$$x^2 + x -x -1$$
or, $$x^2 - 1$$

subtract $$x^2$$ from both sides, we are left with
qty A =-1
qty B = 0

option B
_________________

This is my response to the question and may be incorrect. Feel free to rectify any mistakes

Re: (x-1)   [#permalink] 15 May 2018, 08:52
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