2011 |
18 |
1 |
4 |
2 |
a+1 |
a+2 |
a2-1 |
a |
a-1 |
2011 |
18 |
1 |
4 |
2 |
| ||
2 |
| ||
2 |
3 |
| ||
3 |
2 |
a+1 |
a+2 |
a2-1 |
a |
a-1 |
2(a-1) |
(a+1)(a-1) |
a+2 |
(a-1)(a+1) |
a-1 |
a |
3a |
(a+1)(a-1) |
a-1 |
a |
3 |
a+1 |
3 |
3 |
a+1 |
3 | ||
|
3 |
x+2 |
x-2 |
4 |
x2-4x+4 |
x |
x-2 |
2 |
4 |
a-2 |
a |
a-2 |
A.
| B.
| C.
| D.
|
5 |
12 |
|
x-y |
x+3y |
x2-y2 |
x2+6xy+9y2 |
3y |
x+y |
1 |
2 |
x2-2x+1 |
x2-1 |
2x-2 |
x+1 |
1 |
a |
1 |
b |
1 |
3 |
ab |
a-b |
A.-3 | B.-
| C.3 | D.
|
© 2017-2019 超级试练试题库,All Rights Reserved.