x-1 |
x+2 |
x2-2x |
x2-4 |
x |
x-1 |
x-1 |
x+2 |
(x+2)(x-2) |
x(x-2) |
x |
x-1 |
x-1 |
x |
x |
x-1 |
(x-1)2-x2 |
x(x-1) |
1-2x |
x2-x |
1 |
2 |
1-2×
| ||||
|
a3 |
a+1 |
a |
a+1 |
5 |
1 |
a-1 |
a3-a |
a2-2a+1 |
3 |
x-2 |
x2 |
2 |
x |
A.x | B.-
| C.
| D.-
|
5 |
x-2 |
x-3 |
x2-2x |
a+2 |
a2-2a |
a-1 |
a2-4a+4 |
4-a |
a-2 |
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