(1)移项:9(x-2) 2=121,
开方得:3(x-2)=±11,
解得:x 1=
17
3 ,x 2=-
5
3 .
(2)移项:x 2-6x=2,
∴x 2-6x+3 2=2+3 2,
∴(x-3) 2=11,
∴x-3=±
11 ,
解得:x 1=3+
11 ,x 2=3-
11 .
(3)移项:3(x-2) 2-2(x-2)=0,
∴(x-2)[3(x-2)-2]=0,
即x-2=0,3(x-2)-2=0,
解得:x 1=2,x 2=
8
3 .
(4)整理得:2x 2+5x-7=0,
∴(2x+7)(x-1)=0,
即2x+7=0,x-1=0,
解得:x 1=-
7
2 ,x 2=1.