(1)x 2-10x+25=7,
移项得:x 2-10x+18=0,
b 2-4ac=(-10) 2-4×1×18=28,
∴x=
10±
28
2×1 ,
∴x 1=5+
7 ,x 2=5-
7 .
(2)(x-1) 2+2x(x-1)=0,
分解因式得:(x-1)(x-1+2x)=0,
即x-1=0,x-1+2x=0,
解方程得:x 1=1,x 2=
1
3 .
(1)x 2-10x+25=7,
移项得:x 2-10x+18=0,
b 2-4ac=(-10) 2-4×1×18=28,
∴x=
10±
28
2×1 ,
∴x 1=5+
7 ,x 2=5-
7 .
(2)(x-1) 2+2x(x-1)=0,
分解因式得:(x-1)(x-1+2x)=0,
即x-1=0,x-1+2x=0,
解方程得:x 1=1,x 2=
1
3 .