what is the (square root 2 -5) squared
(sqrt (2) - 5 )^2 = (sqrt(2) - 5) x (sqrt(2) - 5)
= sqrt2 sqrt2 - 5 sqrt2 - 5 sqrt2 + 25
= 2 - 10 sqrt5 + 25
= 27 - 10 sqrt(2)
= 12.85786
+37084 
