2-x |
x-5 |
a |
x-3 |
A.0 | B.-2 | C.3 | D.4 |
-2 |
-1 |
a |
1 |
2-x |
x-5 |
m |
5-x |
A.-2 | B.2 | C.5 | D.3 |
x+2 |
x+3 |
m |
x+3 |
A.m=-1,x=-3 | B.m=1,x=-3 | C.m=-1,x=3 | D.m=1,x=3 |
1 |
x-2 |
x-1 |
2-x |
2 |
x |
A.x=-1 | B.x=1 | C.x=2 | D.x=-2 |
x+1 |
x2+x-2 |
3 |
x+2 |
| ||
2 |
1 |
x-1 |
2x |
x+1 |
© 2017-2019 超级试练试题库,All Rights Reserved.