Question 309362
{{{5/(12-sqrt2)=(5/(12-sqrt(2)))*((12+sqrt(2))/(12+sqrt(2)))}}}
{{{5/(12-sqrt(2))=(5(12+sqrt(2))/(144+12sqrt(2)-12sqrt(2)-2))}}}
{{{5/(12-sqrt(2))=(5/142)(12+sqrt(2))}}}