1 |
x-1 |
1 |
x+1 |
2x |
x2+1 |
4x3 |
x4+1 |
A.
| B.
| C.
| D.
|
1 |
x-1 |
1 |
x+1 |
2x |
x2+1 |
4x3 |
x4+1 |
2x |
x2-1 |
2x |
x2+1 |
4x3 |
x4+1 |
4x3 |
x4-1 |
4x3 |
x4+1 |
8x7 |
x8-1 |
(x-2)3-(x-1)2+1 |
x-2 |
a+b |
2 |
b-2c |
3 |
3c-a |
4 |
5a+6b-7c |
8a+9b |
xy |
x+y |
yz |
y+z |
zx |
z+x |
1 |
y |
1 |
z |
1 |
x |
a-b |
a+2b |
a2-b2 |
a2+4ab+4b2 |
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