m |
m-2 |
1 |
m2-4 |
A.
| B.
| C.
| D.
|
1 |
m2-4 |
m |
m-2 |
1 |
(m+2)(m-2) |
m-2 |
m |
1 |
m2+2m |
(x-1)2 |
4x |
2x2 |
x-x2 |
a+1 |
a2-a |
a2-1 |
a2-2a+1 |
A.
| B.a | C.
| D.
|
1 |
36-a2 |
1 |
a2-6a |
x2-1 |
x2+4x+4 |
(x+2) |
x2+x |
x+2 |
x2-2x |
x-1 |
x2-4x+4 |
4-x |
x |
(x-1)(x+2) |
(x+1)(x+2) |
A.5x2-1 | B.5x2-5 | C.5x2+10x+5 | D.x2+2x+1 |
© 2017-2019 超级试练试题库,All Rights Reserved.