2a |
a2-9 |
1 |
a-3 |
2a |
(a-3)(a+3) |
a+3 |
(a-3)(a+3) |
2a-(a+3) |
(a-3)(a+3) |
a-3 |
(a-3)(a+3) |
1 |
a+3 |
2x+1 |
(x-3)(x+4) |
A |
x-3 |
1 |
x+4 |
A.2 | B.1 | C.-2 | D.-1 |
x2 |
y-x |
y2 |
y-x |
1 |
x-3 |
x |
3-x |
2a2 |
a-2 |
8 |
2-a |
1 |
a-b |
1 |
a+b |
A.
| B.
| C.-
| D.-
|
1 |
f |
1 |
u |
1 |
v |
© 2017-2019 超级试练试题库,All Rights Reserved.