${{\sqrt 2 } \over {\sqrt {(2 + \sqrt 3 )} - \sqrt {(2 - \sqrt 3 } )}} = $
$0$
$1$
$\sqrt 2 $
$1/\sqrt 2 $
${({x^5})^{1/3}}{(16{x^3})^{2/3}}$${\left( {{1 \over 4}{x^{4/9}}} \right)^{ - 3/2}} = $
${a^{m{{\log }_a}n}} = $
જો ${7 \over {{2^{1/2}} + {2^{1/4}} + 1}}$$ = A + B{.2^{1/4}} + C{.2^{1/2}} + D{.2^{3/4}}$, તો $A+B+C+D= . . .$
જો $x + \sqrt {({x^2} + 1)} = a,$ તો $x =$
$\root 4 \of {(17 + 12\sqrt 2 )} = $