-35a4b3c |
21a2b4d |
x2-(y-z)2 |
(x+y)2-z2 |
-7a2b3•5a2c |
7a2b3•3bd |
5a2c |
3db |
(x+y-z)(x-y+z) |
(x+y+z)(x+y-z) |
x-y+z |
x+y+z |
xy-2y |
x2-4x+4 |
a2-b2 |
a2+ab |
A.
| B.
| C.
| D.
|
A.
| ||||
B.
| ||||
C.
| ||||
D.1-
|
1 |
6ab2 |
1 |
9a2bc |
a-1 |
a2+2a+1 |
6 |
a2-1 |
1 |
3-x |
6a2b |
8a3 |
© 2017-2019 超级试练试题库,All Rights Reserved.