a(x+1) |
x-2 |
a(x+1) |
x-2 |
a(5+1) |
5-2 |
a(x+1) |
x-2 |
a(x+1)-2x+4 |
x-2 |
(a-2)x+5 |
x-2 |
x+
| ||
x-2 |
x-
| ||
x-2 |
5 |
2-a |
5 |
2-a |
5 |
x-2 |
x+
| ||
x-2 |
x-
| ||
x-2 |
5 |
2-a |
5 |
2-a |
5 |
2-a |
A.{x|x≤2或x≥1} | B.{x|-2<x<1} | C.∅ | D.{x|-2≤x≤1} |
A.{x|x≠-
| B.{x|-
| C.∅ | D.{-
|
A.-1≤a≤0 | B.-1≤a<0 | C.-1<a≤0 | D.-1<a<0 |
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