
(1)2y2-4y=2,2y2-4y-2=0,y2-2y-1=0,(y-1)2-2=0,(y-1)2=2,y-1=±2,解得:y1=2+1,y2=-2+1;(2)2(x-1)2-5(x-1)+2=0,(x-1-2)[2(x-1)-1]=0,故(x-3)=0或(2x-3)=0,解得:x1=3,x2=32....

(1)2y2-4y=2,2y2-4y-2=0,y2-2y-1=0,(y-1)2-2=0,(y-1)2=2,y-1=±2,解得:y1=2+1,y2=-2+1;(2)2(x-1)2-5(x-1)+2=0,(x-1-2)[2(x-1)-1]=0,故(x-3)=0或(2x-3)=0,解得:x1=3,x2=32....