x2-1 |
x+2 |
1 |
x+2 |
1 |
3 |
x2-1 |
x+2 |
1 |
x+2 |
(x+1)(x-1) |
x+2 |
1 |
x+2 |
x+2 |
x+2 |
(x+1)(x-1) |
x+2 |
1-x-2 |
x+2 |
(x+1)(x-1) |
x+2 |
x+2 |
x+1 |
1 |
3 |
1 |
3 |
2 |
3 |
1 |
x-1 |
1 |
x+1 |
3x |
1-x2 |
1 |
a2-b2 |
1 |
a+b |
1 |
a-b |
a-1 |
a |
1 |
a |
x4-y4 |
x2-2xy+y2 |
x2+y2 |
y-x |
a2-1 |
a-1 |
x3y |
z |
xz |
y |
y |
x2z |
A.
| B.-
| C.-
| D.
|
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