2 |
x |
1 |
3 |
x |
π-3 |
5 |
a-x |
x(x+y) |
x |
x+3 |
(x+1)(x-2) |
A.2个 | B.3个 | C.4个 | D.5个 |
1 |
3 |
x |
π-3 |
2 |
x |
5 |
a-x |
x(x+y) |
x |
x+3 |
(x+1)(x-2) |
x-3 |
x+3 |
A.-3 | B.3或-3 | C.3 | D.0 |
|x|-3 |
x-3 |
A.0 | B.3 | C.-3 | D.3或-3 |
A.
| B.
| C.
| D.
|
x-1 |
x+3 |
1 |
a-1 |
4 |
3 |
h |
π |
2 |
x+3 |
A.①③④ | B.①④ | C.①③ | D.③④ |
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