question_answer

\[\frac{\left[ {{\left. 4+\sqrt{(15)} \right]}^{3/2}}+{{\left[ 4-\sqrt{(15)} \right]}^{3/2}} \right]}{{{\left[ 6+\sqrt{(35)} \right]}^{3/2}}-{{\left[ 6-\sqrt{(35)} \right]}^{3/2}}}=\]

A)  \[1\]                            

B)  \[\frac{5}{13}\]

C)  \[\frac{7}{13}\]

D)  \[\frac{13}{7}\]

E)  None of these