x |
y |
1 |
8 |
2 |
3 |
3 |
5+y |
x-y |
5 |
1 |
8 |
2 |
3 |
x-y |
5 |
x |
y |
3 |
5+y |
x |
y |
3 |
5+y |
x-1 |
2-3x |
x+a |
2x+1 |
A.分式的值为0 | ||
B.分式无意义 | ||
C.当a≠
| ||
D.当a≠-
|
a-b |
2 |
x(x+3) |
x |
5+x |
π |
a+b |
a-b |
A.1个 | B.2个 | C.3个 | D.4个 |
|x|-2 |
x2-4x+4 |
A.x=2 | B.x=-2 | C.x=2或x=-2 | D.x=2或x=1 |
x2-9 |
x-3 |
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