a-4 |
5 |
1 |
x |
2 |
x |
5 |
π |
m-3 |
m |
2 |
3 |
x |
x+2 |
A.2个 | B.3个 | C.4个 | D.5个 |
a-4 |
5 |
5 |
π |
2 |
3 |
1 |
x |
2 |
x |
m-3 |
m |
x |
x+2 |
a2-9 |
a2-a-6 |
A.3 | B.-3 | C.±3 | D.a≠-2 |
x-1 |
2x-1 |
A.当x=2时,
| ||
B.当x≠3时,
| ||
C.无论x为何值,
| ||
D.无论x为何值,
|
3 |
2x-5 |
x-3 |
|x-1| |
A.x<1 | B.x<3且x≠1 | C.x<3 | D.x=3 |
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