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The value of $'\alpha'$ for which the equation $x^3+ax+1=0$ and $x^4+ax^2+1=0$ have a common root is
\[\begin {array} {1 1} (a)\;-2 & \quad (b)\;-1 \\ (c)\;1 & \quad (d)\;2 \end {array}\]
jeemain
eamcet
math
2011
q31
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Sep 20, 2013
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meena.p
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(a) -2
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Nov 7, 2013
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pady_1
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