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# (a+5)(a-5)=0

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Joined: 18 Apr 2015
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Kudos [?]: 1156 [0], given: 5481

(a+5)(a-5)=0 [#permalink]  14 Jun 2018, 16:46
Expert's post
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Question Stats:

71% (00:30) correct 28% (00:25) wrong based on 39 sessions
$$(a+5)(a-5)=0$$

$$(b+5)(b-5)=0$$

 Quantity A Quantity B (a+5) (b+5)

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

_________________
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Joined: 29 May 2018
Posts: 125
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Kudos [?]: 85 [1] , given: 4

Re: (a+5)(a-5)=0 [#permalink]  15 Jun 2018, 05:47
1
KUDOS
Carcass wrote:
$$(a+5)(a-5)=0$$

$$(b+5)(b-5)=0$$

 Quantity A Quantity B (a+5) (b+5)

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.

We get a = -5 and 5 ; similarly b = -5 and 5.

Col A : sub 5 or -5 in (a+5) then we get 10 or 0 respectively.
Col B : sub 5 or -5 in (b+5) then we get 10 or 0 respectively.

there is no relationship , let's say when col A i.e (a+5) when a is 5 then it is 10 , col B can be 10 or 0 , we don't know.

D.
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Kudos [?]: 49 [0], given: 15

Re: (a+5)(a-5)=0 [#permalink]  15 Jun 2018, 08:23
i thought they would be equal
Re: (a+5)(a-5)=0   [#permalink] 15 Jun 2018, 08:23
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# (a+5)(a-5)=0

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