IABI=√2-1
C所表示的数为x=√2-1,或 x= 1-√2
(X-√2)^2=(√2-1-√2)^2=1,或(X-√2)^2=(1-√2-√2)^2=(1-2√2)^2=9-4√2
(X-根号下2)的平方的值为:1 或 9-4√2