1 |
3 |
a |
c2+4 |
c |
a2+4 |
A.0 | B.
| C.
| D.1 |
1 |
3 |
|
|
a |
c2+4 |
c |
a2+4 |
a3+c3 +4(a+c) |
(c2+4)(a2+4) |
a3+c3 +4(a+c) |
a2c2+4(a2+c2)+16 |
(a+c)[(a+c)2-3ac+4] |
16+4(a+c)2-8ac+16 |
(a+c)[(a+c)2-3ac+4] |
4(a+c)2 |
(a+c)3-8(a+c) |
4(a+c)2 |
a+c |
4 |
2 |
a+c |
ac |
a |
c2+4 |
c |
a2+4 |
t |
4 |
2 |
t |
t |
4 |
2 |
t |
1 |
4 |
2 |
t2 |
1 |
2 |
a |
c2+4 |
c |
a2+4 |
1 |
2 |
1 |
2 |
1 |
n |
1 |
2 |
A.
| B.
| C.
| D.
|
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