题目内容
集合{3,x,x2-2x}中,x应满足的条件是 .
x≠3且x≠0且x≠-1.
x≠3,
x2-2x≠3,
x2-2x≠x.
解得x≠3且x≠0且x≠-1.
集合{3,x,x2-2x}中,x应满足的条件是________.