a-1 |
a |
a2-1 |
a2+2a |
a-1 |
a |
a(a+2) |
(a+1)(a-1) |
a+2 |
a+1 |
a+1-(a+2) |
a+1 |
a+1-a-2 |
a+1 |
1 |
a+1 |
1 |
a+1 |
2 |
a2-4 |
a2+4 |
4a |
1 |
2 |
1 |
a |
A.
| B.
| ||||||||
C.
| D.
|
18x4y-3 |
12x-1y3 |
a2 |
b |
b2 |
2a |
1 |
a3b2 |
4 |
a+2 |
3-x |
x-2 |
5 |
x-2 |
1 |
x-1 |
x2-4x+4 |
x2-1 |
4-a2 |
a2+6a+9 |
a-2 |
2a+6 |
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