1 |
5 |
4x |
π-3 |
x2-y2 |
2 |
5x2 |
x |
A.1个 | B.2个 | C.3个 | D.4个 |
1 |
5 |
4x |
π-3 |
x2-y2 |
2 |
5x2 |
x |
x2 |
x2+x |
|x|-5 |
(x-1)(x-5) |
x+2 |
3x-1 |
1-x2 |
1-x |
1 |
x+1 |
x+1 |
xy |
x |
π+1 |
x+y |
5 |
a2 |
a |
1 |
3 |
5 |
x+y |
A.4个 | B.3个 | C.2个 | D.5个 |
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 |
x2-5x-6 |
x+1 |
A.6 | B.-1或6 | C.-1 | D.-6 |
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