x+2 |
x-2 |
x-2 |
x+2 |
(x+2)(x+3) |
(x-2)(x-3) |
(x-2)(x+3) |
(x+2)(x-3) |
A.(1)(2) | B.(3)(4) | C.(1)(3) | D.(2)(4) |
A.3+
| ||
B.无论x取何值,分式
| ||
C.分式
| ||
D.
|
x-1 |
2x+1 |
9-m2 |
m+3 |
|2x-5| |
1+x2 |
5 |
x-1 |
2 |
x |
a+2b |
2 |
a+b |
π |
a+1 |
a |
(x-1)(x+2) |
x+2 |
| ||
b |
A.2 | B.3 | C.4 | D.5 |
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