1 |
x+2 |
1 |
x-2 |
2 |
x2+2x |
x-1 |
x |
x-2 |
x+1 |
2x2-x |
x2+2x+1 |
x-2-x-2 |
(x+2)(x-2) |
x(x+2) |
2 |
-4 |
(x+2)(x-2) |
x(x+2) |
2 |
2x |
x-2 |
12 |
4 |
x2-1-x2+2x |
x(x+1) |
(x+1)2 |
x(2x-1) |
2x-1 |
x(x+1) |
(x+1)2 |
x(2x-1) |
x+1 |
x2 |
x-3 |
x-2 |
5 |
x-2 |
3 |
a+2 |
a2-2a+1 |
a2-4 |
1 |
x |
3 |
y+z |
5 |
z+x |
x-2y |
2y+z |
A.1 | B.
| C.-
| D.
|
1 |
x+2 |
x2+2x+1 |
x+2 |
x2-1 |
x-1 |
© 2017-2019 超级试练试题库,All Rights Reserved.