(1+√2)x²-(1-√2)x=0
x{(1+√2)x-(1-√2)}=0
x1=0
x2=(1-√2)/(1+√2)=(1-√2)^2/(1+√2)(1-√2)=(2-2√2+1)/(1-2)=2√2-3x2=(1-√2)/(1+√2)=(1-√2)^2/(1+√2)(1-√2)=(2-2√2+1)/(1-2)=2√2-3 ????? “/”中间的这个是什么符号啊?分数线从{(1+√2)x-(1-√2)}到(1-√2)/(1+√2)怎么来的。求分析。(1+√2)x-(1-√2)=0(1+√2)x=(1-√2)x=(1-√2)/(1+√2)