3-x |
2x-4 |
5 |
x-2 |
3 |
3-x |
2x-4 |
5 |
x-2 |
3-x |
2x-4 |
5 |
x-2 |
(x-2)(x+2) |
x-2 |
3-x |
2x-4 |
5-(x2-4) |
x-2 |
3-x |
2(x-2) |
x-2 |
(3-x)(3+x) |
1 |
2(x+3) |
3 |
1 | ||
2
|
| ||
6 |
a2 |
a-3 |
9 |
3-a |
a+3 |
a |
A.-a | B.a | C.
| D.1 |
1 |
a-1 |
a2+a |
a-1 |
2m-6 |
m2-4 |
4m-9 |
m-2 |
3 |
x-1 |
1 |
x+1 |
x+2 |
x+1 |
2 |
m+2n |
m2-n2 |
© 2017-2019 超级试练试题库,All Rights Reserved.