2a |
a+1 |
2 |
a+1 |
pq |
2r |
2p |
r2 |
1 |
2q |
2a |
a+1 |
2 |
a+1 |
2a+2 |
a+1 |
2(a+1) |
a+1 |
pq |
2r |
2p |
r2 |
1 |
2q |
p3q3 |
8r3 |
r2 |
2p |
1 |
2q |
p2q3 |
16r |
1 |
2q |
p2q4+8r |
16rq |
1 |
a |
1 |
b |
a+b |
ab |
1 |
1+a4 |
1 |
1+b4 |
1 |
1+c4 |
1 |
1+x4 |
1 |
1+y4 |
1 |
1+z4 |
1 |
x |
1 |
y |
A.x+y | B.
| C.
| D.
|
1 |
2008 |
1 |
2007 |
1 |
2006 |
1 |
2 |
x2 |
1+x2 |
x |
y+z |
y |
z+x |
z |
x+y |
a |
1+a |
b |
1+b |
c |
1+c |
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