Question 317664
Radical 2 - radical t = 12 
{{{sqrt(2) - sqrt(t) = 12}}}
{{{sqrt(t) = sqrt(2) - 12}}}
square both sides
{{{t = 2 + 144 - 24sqrt(2)}}}
{{{t = 146 - 24sqrt(2)}}}
t =~ 112.0589