题目内容
把多项式ax2-ax-2a分解因式,下列结果正确的是
A.a(x-2)(x+1)
B.a(x+2)(x-1)
C.a(x-1)2
D.(ax-2)(ax+1)
a(x-2)(x+1)
a(x+2)(x-1)
a(x-1)2
(ax-2)(ax+1)