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If $\alpha$ and $\beta$ are the roots of $x^2-2x+4=0,$ then the value of $\alpha ^6+\beta ^6$ is :

\[\begin {array} {1 1} (1)\;32 & \quad (2)\;64 \\ (3)\;128 & \quad (4)\;256 \end {array}\]

1 Answer

(3) 128
answered Nov 7, 2013 by pady_1
 

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