y-3 |
4y-8 |
5 |
y-2 |
y-3 |
4y-8 |
(y+2)(y-2) |
y-2 |
5 |
y-2 |
y-3 |
4y-8 |
y2-9 |
y-2 |
y-3 |
4(y-2) |
y-2 |
(y+3)(y-3) |
1 |
4(y+3) |
1 |
4y+12 |
x2-4 |
x2-4x+4 |
2-x |
x+2 |
x |
x-2 |
A.-
| B.
| C.-
| D.
|
1 |
2x |
1 |
x+y |
x+y |
2x |
2 |
1 |
x+2 |
x2-1 |
x+2 |
4 |
x2-4 |
1 |
x+2 |
1 |
x-2 |
1 |
a+1 |
a+3 |
a2-1 |
a2-2a+1 |
a2+4a+3 |
© 2017-2019 超级试练试题库,All Rights Reserved.