x-2 |
2x-1 |
1.5 |
1-2x |
1 |
x+1 |
x2-2x+1 |
x2-1 |
x-1 |
x+1 |
x-2 |
2x-1 |
1.5 |
2x-1 |
1 |
x+1 |
(x-1)2 |
(x+1)(x-1) |
x+1 |
x-1 |
x-1+(x-1)2 |
(x+1)(x-1) |
x+1 |
x-1 |
x(x-1) |
(x+1)(x-1) |
x+1 |
x-1 |
x |
x-1 |
2 |
2-1 |
m-a |
n-a |
A.
| B.
| ||||
C.
| D.以上答案都不对 |
1 |
2 |
1 |
2 |
2 |
3 |
2 |
3 |
3 |
4 |
3 |
4 |
2012 |
2013 |
x-y |
x |
2xy-y2 |
x |
m2+n2 |
m2-n2 |
m-n |
m+n |
2mn |
(m+n)2(m-n) |
1 |
2 |
2 |
b |
c |
a-b |
a |
b-c |
b |
c-a |
© 2017-2019 超级试练试题库,All Rights Reserved.