x2+ax |
(x+1)(x-1)2 |
x2+ax |
(x+1)(x-1)2 |
(-x)2+a(-x) |
(-x+1)(-x-1)2 |
x2+ax |
(x+1)(x-1)2 |
(-2)2+a(-2) |
(-2+1)(-2-1)2 |
x22+2a |
(2+1)(2-1)2 |
x2-x |
(x+1)(x-1)2 |
x |
(x+1)(x-1) |
x2+ax |
(x+1)(x-1)2 |
x2+ax |
(x+1)(x-1)2 |
1 |
x |
|
A.1 | B.2 | C.3 | D.4 |
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
1 |
2 |
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分又不必要条件 |
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