x2-x |
x+1 |
2x-2 |
x+1 |
2 |
x(x-1) |
x+1 |
(x2-1-2x+2) |
x+1 |
x(x-1) |
x+1 |
x+1 |
(x-1)2 |
x |
x-1 |
2 |
| ||
|
| ||
|
2+
| ||
2 |
. |
| . |
. |
| . |
. |
| . |
. |
| . |
. |
| . |
1 |
6×11 |
1 |
11×16 |
1 |
16×21 |
1 |
21×26 |
1 |
26×31 |
1 |
31×36 |
A.
| B.
| C.
| D.
|
1 |
p |
1 |
q |
1 |
p+q |
q |
p |
p |
q |
a |
a+b |
1 |
a |
1 |
b |
1 |
c |
A.是正数 | B.是负数 |
C.是零 | D.正负不能确定 |
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