x |
x-2 |
x |
x+2 |
4x |
2-x |
x(x+2)-x(x-2) |
(x+2)(x-2) |
4x |
2-x |
4x |
(x+2)(x-2) |
-(x-2) |
4x |
1 |
x+2 |
1 |
x |
1 |
y |
5x+3xy-5y |
3x-xy-3y |
A.
| B.
| C.
| D.3 |
a2 |
a2+2a |
a2 |
a-2 |
4 |
a-2 |
m2-2m |
4-m2 |
x-y |
x2-2xy+y2 |
b |
a-b |
a |
a+b |
2ab |
b2-a2 |
1 |
b |
1 |
a |
ab |
a2-b2 |
2b2 |
a-b |
3 |
x-1 |
x+2 |
2x-2 |
1 |
a-1 |
1 |
a+1 |
a |
1-a2 |
2008a |
a2-2a+1 |
1 |
a-1 |
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