x-2 |
x2 |
2x2 |
x-2 |
x-2 |
x2 |
A.y2-3y+2=0 | B.2y2-3y+1=0 | C.y2+3y-2=0 | D.2y2+3y-1=0 |
2 |
y |
2x |
x2-4 |
1 |
x+2 |
A.-1 | B.2或-1 | C.-2或3 | D.3 |
1-ax |
x2-1 |
1 |
x+1 |
1 |
1-x |
1 |
2 |
1 |
x |
x2-2x+1 |
x |
1-x |
x-2 |
1 |
x-2 |
x |
x-2 |
1 |
x2-4 |
A.-
| B.-2 | C.-
| D.
|
2 |
x+1 |
1 |
x |
© 2017-2019 超级试练试题库,All Rights Reserved.