A x²=2x
x²-2x=0
x²-2x+1=1
(x-1)²=1
x-1=±1
x=2或0
x=2
B x+1=7
x=7-1
x=6
x÷10=2÷5x-1.8
x/10=2/5x-1.8
x/10-2/5x=-1.8
x-4x=-18
-3x=-18
x=6
C x²=4
x=±2
x=2
D |X-2|=1
x-2=±1
x=3或1
x-2=1
x=1+2
x=3
结果相同的是B选项,