3x |
x-2 |
x |
x+2 |
2x |
x2-4 |
3x |
x-2 |
x |
x+2 |
x2-4 |
2x |
3x |
x-2 |
x2-4 |
2x |
x |
x+2 |
x2-4 |
2x |
3 |
2 |
1 |
2 |
3 |
2 |
1 |
2 |
y |
x |
y2-xy+x2 |
y2+x2 |
A.
| B.1 | C.
| D.2 |
x |
x+3 |
6 |
x2-9 |
2 |
x-3 |
3 |
1 |
a-b |
1 |
a+b |
a2b |
a2-b2 |
1 |
2 |
a+1 |
a2-a |
4 |
1-a2 |
a-1 |
a2+2a+1 |
a-1 |
a |
a |
a+2 |
1 |
a2+2a |
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