Question 480606
{{{10/(5 - sqrt(5))}}}
= {{{10*(5 + sqrt(5))/((5-sqrt(5))*(5+sqrt(5)))}}}
= {{{10*(5 + sqrt(5))/(25 - 5)}}}
= {{{10*(5 + sqrt(5))/20}}}
= {{{(5 + sqrt(5))/2}}}