x2-1 |
x2+2x+1 |
1 |
2x-2 |
1 |
2 |
-b±
| ||
2a |
6±
| ||
2×3 |
3±
| ||
3 |
3+
| ||
3 |
3-
| ||
3 |
x2-1 |
x2+2x+1 |
1 |
2x-2 |
(x+1)(x-1) |
(x+1)2 |
1 |
2(x-1) |
1 |
2(x+1) |
1 |
2x+2 |
1 |
2 |
1 |
2(x+1) |
1 | ||
2(-
|
a2+a |
a-1 |
a |
a-1 |
1 |
2x |
1 |
x+y |
x+y |
2x |
a |
a2-1 |
3a |
a2-1 |
2a+3 |
1-a2 |
x2-2x |
x+1 |
1 |
x |
2x |
x2-4 |
1 |
x-2 |
x+2 |
x-1 |
© 2017-2019 超级试练试题库,All Rights Reserved.