1 |
a-1 |
a |
a2-1 |
a |
a+1 |
1 |
4 |
a-1+1 |
a-1 |
a-a(a-1) |
(a+1)(a-1) |
a |
a-1 |
(a+1)(a-1) |
-a(a-2) |
a+1 |
2-a |
1 |
4 |
| ||
2-
|
5 |
7 |
m+2 |
m2-2m |
m-1 |
m2-4m+4 |
m-4 |
m |
-4 |
x4-4 |
1 |
2-x |
a2 |
a-1 |
x+2 |
x2-2 |
x-1 |
x2-4x+4 |
x |
x-4 |
15 |
3 |
5 |
20 |
1 |
3 |
6 |
45 |
1 |
2 |
20 |
|
1+
|
1+
|
1+
|
1+
|
1+
|
1+
|
1+
|
1+
|
1+
|
1+
|
1+
|
x2 |
x2-4 |
2+x |
x2-2x |
1 |
x-2 |
a2+2a+1 |
a2-1 |
1 |
a-1 |
2 |
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