$\root 4 \of {(17 + 12\sqrt 2 )} = $
$\sqrt 2 + 1$
${2^{1/4}}(\sqrt 2 + 1)$
$2\sqrt 2 + 1$
None of these
${{12} \over {3 + \sqrt 5 - 2\sqrt 2 }} = $
The square root of $\sqrt {(50)} + \sqrt {(48)} $ is
The value of $\sqrt {[12 - \sqrt {(68 + 48\sqrt 2 )} ]} = $
If ${a^{x - 1}} = bc,{b^{y - 1}} = ca,{c^{z - 1}} = ab,$then $\sum {(1/x) = } $
Solution of the equation ${4.9^{x - 1}} = 3\sqrt {({2^{2x + 1}})} $ has the solution