a+b |
2ab2 |
a2-b2 |
ab3 |
1 |
2(a-b) |
1 |
2 |
2 |
3 |
a+b |
2a |
-
| ||||
2×(-
|
1 |
6 |
1 |
6 |
1 |
a |
a2-1 |
a2-2a+1 |
2a2-a2 |
a-2 |
x2-2x+1 |
x2-1 |
x2-x |
x+1 |
1 |
x |
x+2 |
x2-2x |
x-1 |
x2-4x+4 |
4-x |
x |
1 |
1-a |
a2-a+1 |
a2-2a+1 |
2x |
x+2 |
x |
x-2 |
x |
x2-4 |
1 |
2 |
x2y+xy2 |
(x-y)2 |
x-y |
x+y |
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