x2 -2x+2-2
|
A.4 | B.3 | C.2 | D.0 |
x2 -2x+2-2
|
x2-2x+2-2|x-1| |
x2-2x+2-2x+2 |
x2-2x+2+2x-2 |
2 |
2 |
2 |
3-2
|
2 |
2 |
2 |
2 |
3+2
|
2 |
3 |
3 |
3 |
7-4
|
3 |
5-2
|
(a-b)2 |
A.a>b | B.a<b | C.a≥b | D.a≤b |
(1-sinα-cosα)2 |
A.1-sinα-cosα | B.1+sinα+cosα |
C.0 | D.sinα+cosα-1 |
-x3 |
-
|
A.(x-1)
| B.(-1-x)
| C.(1-x)
| D.(1+x)
|
A.
| B.
| C.
| D.
|
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