a2-4 |
a2-4a+4 |
1 |
2-a |
a2 |
a2-2a |
(a+2)(a-2) |
(a-2)2 |
1 |
a-2 |
a(a-2) |
a2 |
a+3 |
a-2 |
a(a-2) |
a2 |
a+3 |
a |
a+3 |
a |
1 |
a |
1 |
b |
1 |
a |
1 |
b |
2 |
a+b |
b |
a |
a |
b |
x2-2xy+y2 |
x2-xy |
x |
y |
y |
x |
3 |
3 |
1 |
a |
1 |
b |
2a+3ab-2b |
a-2ab-b |
A.
| B.-
| C.
| D.1 |
|
y-x |
x-2y |
x2-y2 |
x2-4xy+4y2 |
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