2x |
x2-y2 |
x |
y2-x2 |
y |
(x-y)(x+y) |
2x |
(x+y)(x-y) |
x |
(x+y)(x-y) |
y |
(x+y)(x-y) |
2x-x+y |
(x+y)(x-y) |
x+y |
(x+y)(x-y) |
1 |
x-y |
1 |
3-4 |
x+
| ||
x-
|
x-
| ||
x+
|
4a |
a-1 |
4a |
a+1 |
x2-y2 |
x |
2xy-y2 |
x |
3x |
x-1 |
x |
x+1 |
x2-1 |
2x |
18 |
1 |
5 |
50 |
|
1 |
3 |
1 |
x-y |
1 |
x+y |
2y |
x2-2xy+y2 |
2 |
2 |
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