1 |
2008 |
1 |
2007 |
1 |
3 |
1 |
2 |
1-x2 |
1+x2 |
1-(
| ||
1+(
|
1-n2 |
1+n2 |
n2-1 |
n2+1 |
1-n2 |
1+n2 |
1 |
n |
1-x2 |
1+x2 |
1-12 |
1+12 |
1-x2 |
1+x2 |
a2-1 |
a-1 |
a2 |
a+b |
1 |
x2 |
1 |
a2 |
1 |
x |
1 |
a |
3 |
x |
6 |
1-x |
x+5 |
x2-x |
1 |
x-1 |
1 |
x+1 |
1 |
x+1 |
x-3 |
x2-1 |
x2-2x+1 |
(x-1)(x-3) |
3-x |
2x-4 |
5 |
x-2 |
a-b |
a-2b |
a2-4b2 |
a2-4ab+4b2 |
A.
| ||||||
B.
| ||||||
C.
| ||||||
D.
|
a |
b |
b |
a |
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