集合A={a|(x+a)/(x2-2)=1}(x+a)/(x^2-2)=1有唯一实数解(1)若a=-√2则(x-√2)/(x^2-2)=1/(x+√2)=1,符合(2)若a=√2则(x+√2)/(x^2-2)=1/(x-√2)=1,符合(3)若a≠√2(x+a)/(x^2-2)=1有唯一实数解等价于x^2-x-2-a=0有唯...