(1)x2-x-1=0,
△=1-4×(-1)=5,
x=
1±
5
2,
所以x1=
1+
5
2,x2=
1−
5
2;
(2)(2x-3)2-(x+6)2=0,
(2x-3+x+6)(2x-3-x-6)=0,
2x-3+x+6=0或2x-3-x-6=0,
所以x1=-1,x2=9;
(3)x2-3x+2=0,
(x-1)(x-2)=0,
x-1=0或x-2=0,
所以x1=1,x2=2.
(1)x2-x-1=0,
△=1-4×(-1)=5,
x=
1±
5
2,
所以x1=
1+
5
2,x2=
1−
5
2;
(2)(2x-3)2-(x+6)2=0,
(2x-3+x+6)(2x-3-x-6)=0,
2x-3+x+6=0或2x-3-x-6=0,
所以x1=-1,x2=9;
(3)x2-3x+2=0,
(x-1)(x-2)=0,
x-1=0或x-2=0,
所以x1=1,x2=2.