(x-1)(x-2) |
(x+1)(x+2) |
A.
| B.-
| C.
| D.-
|
(x-1)(x-2) |
(x+1)(x+2) |
x2-3x+2 |
x2+3x+2 |
(2x-3)(x2+3x+2)-(2x+3)(x2-3x+2) |
(x2+3x+2)2 |
6x2-12 |
(x2+3x+2)2 |
1 |
6 |
π |
2 |
π |
2 |
A.-1 | B.-1+
| C.1 | D.
|
A.-2cosx | B.2cosx | C.0 | D.-2sinx |
A.3 | B.2 | C.4 | D.0 |
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