题目
题型:单选题难度:一般来源:不详
(x-3)2 |
A.x-3 | B.3-x | C.±(x-3) | D.3 |
答案
∴若x<0,|2-x|=2-x,2+|x|=2-x,
则
(x-3)2 |
故选B.
核心考点
举一反三
-
|
A.
| B.-
| C.-
| D.
|
2 |
3 |
3 | (x+2)3 |
(x+3)2 |
A.2x+5 | B.2x-5 | C.1 | D.-1 |
(x-3)2 |
A.x-3 | B.3-x | C.±(x-3) | D.3 |
(x-3)2 |
-
|
A.
| B.-
| C.-
| D.
|
2 |
3 |
3 | (x+2)3 |
(x+3)2 |
A.2x+5 | B.2x-5 | C.1 | D.-1 |