1 |
1-x |
1 |
x2 |
1-x |
1-x |
1 |
1-x |
1 |
x2 |
x2 |
x2 |
x |
1-x |
(1+x)(1-x) |
x2 |
1+x |
x |
2a |
a+1 |
a2-2a+1 |
a2-1 |
7 |
2 |
x-3 |
x2-1 |
x2-2x-3 |
x2+2x+1 |
1 |
x-1 |
2 |
1 |
1+a |
1 |
1+b |
x2 |
x2-y2 |
y2 |
x-y |
2x2y-2xy2 |
x2-2xy+y2 |
A.x+y | B.x-y | C.y-x | D.
|
3 |
a+b |
a2+2ab+b2 |
b2-ab |
a2-b2 |
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