b |
a |
x2-1 |
x-1 |
4 |
1-y |
x |
π |
1 |
|y-1| |
A.2个 | B.3个 | C.4个 | D.8个 |
b |
a |
x2-1 |
x-1 |
4 |
1-y |
x |
π |
1 |
|y-1| |
b |
a |
x2-1 |
x-1 |
4 |
1-y |
1 |
|y-1| |
x2-5x-6 |
x+1 |
A.6 | B.-1或6 | C.-1 | D.-6 |
1 | ||
|
x-1 |
x+2 |
A.0 | B.1 | C.-1 | D.-2 |
2 |
x |
x+y |
5 |
1 |
2-a |
1 |
π-1 |
A.1 | B.2 | C.3 | D.4 |
2 |
x-1 |
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