答案
(1)解:分解因式得:(x+1+2)(x+1-2)=0,
x+1+2=0,x+1-2=0,
解得:x
1=-3,x
2=1;
(2)解:配方得:x
2+2x+1=2+1,
(x+1)
2=3,
开方得:x+1=±
,
即x
1=-1+
,x
2=-1-
;
(3)解:移项得:2x(x-2)-3(x-2)=0,
(x-2)(2x-3)=0,
x-2=0,2x-3=0,
解得:x
1=2,x
2=
.
(1)解:分解因式得:(x+1+2)(x+1-2)=0,
x+1+2=0,x+1-2=0,
解得:x
1=-3,x
2=1;
(2)解:配方得:x
2+2x+1=2+1,
(x+1)
2=3,
开方得:x+1=±
,
即x
1=-1+
,x
2=-1-
;
(3)解:移项得:2x(x-2)-3(x-2)=0,
(x-2)(2x-3)=0,
x-2=0,2x-3=0,
解得:x
1=2,x
2=
.