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Find the value of 'm' if the roots of the equation 2^m X^2 +

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Senior Manager
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Find the value of 'm' if the roots of the equation 2^m X^2 + [#permalink] New post 29 Feb 2004, 16:16
Find the value of 'm' if the roots of the equation 2^m X^2 + 8X + 32^m = 0 are real & equal.

a.1/4
b.4/3
c.3/2
d.2/3
e. :fu
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Pls include reasoning along with all answer posts.
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Este examen me conduce jodiendo loco

Senior Manager
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 [#permalink] New post 29 Feb 2004, 16:51
D!!

b^2 = 4ac
64 = 4*2^m*2^5m
2^6 = 2^(2+m+5m)
6=6m+2
m=2/3....
Senior Manager
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 [#permalink] New post 29 Feb 2004, 16:55
:yes
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Pls include reasoning along with all answer posts.
****GMAT Loco****
Este examen me conduce jodiendo loco

  [#permalink] 29 Feb 2004, 16:55
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Find the value of 'm' if the roots of the equation 2^m X^2 +

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