x2-4 |
x2-4x+4 |
2-x |
x+2 |
x |
x-2 |
(x+2)(x-2) |
(x-2)2 |
x-2 |
x+2 |
x-2 |
x |
(x+2)2-(x-2)2 |
(x+2)(x-2) |
x-2 |
x |
8x |
(x+2)(x-2) |
x-2 |
x |
8 |
x+2 |
x-2 |
x |
a |
a2-b2 |
1 |
a+b |
b |
b-a |
x2-4x+4 |
2x-4 |
m+1 |
1-m2 |
A.2010 | B.-2010 | C.
| D.
|
a-3b |
a-b |
a+b |
a-b |
a-b |
a |
2ab-b2 |
a |
A.甲合算 | B.乙合算 |
C.甲、乙一样合算 | D.无法确定 |
© 2017-2019 超级试练试题库,All Rights Reserved.