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

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

65% (00:34) correct 34% (00:25) wrong based on 32 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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Re: (a+5)(a-5)=0 [#permalink] New post 15 Jun 2018, 05:47
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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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Re: (a+5)(a-5)=0 [#permalink] New post 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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