The greatest number among $\root 3 \of 9 ,\root 4 \of {11} ,\root 6 \of {17} $ is
$\root 3 \of 9 $
$\root 4 \of {11} $
$\root 6 \of {17} $
Can not be determined
The equation $\sqrt {(x + 1)} - \sqrt {(x - 1)} = \sqrt {(4x - 1)} $, $x \in R$ has
${{12} \over {3 + \sqrt 5 - 2\sqrt 2 }} = $
${{\sqrt 2 } \over {\sqrt {(2 + \sqrt 3 )} - \sqrt {(2 - \sqrt 3 } )}} = $
Solution of the equation ${4.9^{x - 1}} = 3\sqrt {({2^{2x + 1}})} $ has the solution
The value of $\sqrt {[12\sqrt 5 + 2\sqrt {(55)} ]} $ is