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Ask iit jee aieee pet cbse icse state board experts Expert Question: qoestion from entrance
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[Post New]15 Apr 2008 15:43:35 IST
    Subject: qoestion from entrance
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deepumon_1398 (0)

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one root ax2+ax+3=0 is 1.then the other root is
a)a-1  b)1-a  c)3  d)-3  e)none of these
    
[Post New]15 Apr 2008 15:47:48 IST
    Subject: qoestion from entrance
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akhil_o (2699)

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putting x=1
a+a+3=0
a=-3/2

so eqn is
-3/2 x^2-3x/2+3=0

x^2+x-2=0
(x+2)(x-1)=0
x=1 or x=-2

hence x=-2

none of these
" Always remember money isn't everything but make sure you have made a lot of it before talking such nonsense!"
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[Post New]15 Apr 2008 15:49:10 IST
    Subject: qoestion from entrance
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Decoder (331)

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sum of roots is -1.. so other root is -2 ..

answer gets to e) none of these..

a would settle itself to get the product as 3/a..= - 2..
a become -3/2..
Diamonds r formed under greatest pressures..
so r the champs.

Kriteesh..


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[Post New]15 Apr 2008 17:58:05 IST
    Subject: qoestion from entrance
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cuteprincess (17)

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Ya the ans is none of the above
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[Post New]15 Apr 2008 23:31:40 IST
    Subject: qoestion from entrance
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krishna.gopal (2035)

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x=-2 is right answer. So e is right answer
Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi
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[Post New]16 Apr 2008 00:16:08 IST
    Subject: qoestion from entrance
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hhitesh_1 (79)

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agreed it was an easy question
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