3 |
2 |
1 |
3x-1 |
5 |
6x-2 |
a |
a-1 |
a2-a |
a2-1 |
1 |
a-1 |
10 |
9 |
10 |
9 |
7 |
3 |
14 |
3 |
10 |
9 |
a |
a-1 |
(a+1)(a-1) |
a(a-1) |
1 |
a-1 |
a+1 |
a-1 |
1 |
a-1 |
a |
a-1 |
1 |
x-1 |
1 |
x+1 |
1 |
x2-1 |
1 |
x-1 |
1 |
x+1 |
2x |
2x-1 |
5 |
1-2x |
7 |
x2+x |
3 |
x2-x |
6 |
x2-1 |
40 |
x |
4 |
3 |
40 |
3x |
2x-5 |
x-2 |
3 |
2-x |
A.x=-2 | B.x=2 | C.x=1 | D.x=1或x=2 |
© 2017-2019 超级试练试题库,All Rights Reserved.