x-y |
x-2y |
x2-y2 |
x2-4xy+4y2 |
2 |
2 |
x-y |
x-2y |
x2-y2 |
x2-4xy+4y2 |
x-y |
x-2y |
(x-2y)2 |
(x+y)(x-y) |
x-2y |
x+y |
2 |
2 |
1+
| ||||
1+
|
3
| ||
2 |
a-2b |
b |
5 |
3 |
a |
b |
1 |
1-b |
1 |
1-c |
1 |
1-d |
(1+x)2 |
1-x2 |
2x |
1-x |
2 |
x2y-4y3 |
x2+4xy+4y2 |
4xy |
x-2y |
|
a(x-a) |
a(y-a) |
x-a |
a-y |
3x2+xy-y2 |
x2-xy+y2 |
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