题目内容
A. x3-x2-x+1
B. x2+y-xy-x
C. x2-2x-y2+1
D.(x2+3x)2-(2x+2)2
下列多项式中不含因式(x-1)的是
A.x3-x2-x+1 B.x2+y-xy-x C.x2-2x-y2+1 D.(x2+3x)2-(2x+2)2