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