3(x-2)=5x(2-x) 3(x-2)+5x(x-2) =0(x-2)﹙3+5x﹚=0∴ x-2=0或3+5x=0X1=2 ,X2=-3／5（5x-1）²=2（5x-1）²－﹙√2﹚²=0（5x-1+√2﹚（5x-1-√2﹚=0∴5x-1+√2=0或5x-1-√2=0X1=﹙1-√2﹚／5,X2=﹙1+√2...