2 |
a+1 |
a-1 |
a |
a2-2a+1 |
1 |
a |
a+1 |
a-1 |
a |
(a-1)2 |
1 |
a |
(a+1)(a-1) |
(a-1)2 |
a2 |
(a-1)2 |
a2-1 |
(a-1)2 |
a2 |
(a-1)2 |
1 |
(a-1)2 |
2 |
1 |
(a-1)2 |
1 | ||
(1-
|
1 |
2 |
x2 |
x+4 |
16 |
x+4 |
x-4 |
x |
a2-1 |
a2+6a+9 |
a2-9 |
a-1 |
1 |
m-1 |
m |
m2-1 |
x |
x-3 |
x+6 |
x2-3x |
1 |
x |
x2-4x |
x2-8x+16 |
© 2017-2019 超级试练试题库,All Rights Reserved.