1 |
a+2 |
1 |
a-2 |
4 |
a2 |
1 |
a+2 |
1 |
a-2 |
4 |
a2 |
a-2 |
(a+2)(a-2) |
a+2 |
(a+2)(a-2) |
a2 |
4 |
-4 |
(a+2)(a-2) |
a2 |
4 |
a2 |
(a+2)(a-2) |
(-1)2 |
(-1+2)(-1-2) |
1 |
3 |
a+1 |
a-3 |
a-3 |
a+2 |
a2-6a+9 |
a2-4 |
x |
x-y |
2y |
x-y |
xy |
x-2y |
1 |
x |
1 |
y |
2x-6 |
4-4x+x2 |
x2+x-6 |
3-x |
a2 |
b |
b2 |
a |
1 |
ab |
2+
| ||
2-
|
| ||||
|
3-x |
2x-4 |
5 |
x-2 |
1 |
x-1 |
1 |
x+1 |
x |
x-1 |
1 |
x2-x |
2 |
a |
a-1 |
a2-a |
a2-1 |
1 |
1-a |
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