x2 |
x4+x2+1 |
1 |
2 |
x2 |
x4+x2+1 |
(
| ||||
(
|
4 |
21 |
3 |
x |
2 |
y |
2x-3y-xy |
7xy+9y-6x |
A.
| B.-
| C.-
| D.
|
x2 |
x-1 |
2x |
1-x |
x |
x-1 |
3 |
1 |
a+1 |
a+1 |
a2-2a+1 |
a+1 |
a-1 |
2 |
1 |
y |
1 |
z |
A.1 | B.2 | C.-1 | D.-2 |
1 |
b |
1 |
c |
2x |
y |
3y |
x |
4 x2+10xy+6 y2 |
2 x2+3 y2 |
A.3 | B.2 | C.1 | D.0 |
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