AB |
AC |
3 |
1 |
2 |
1 |
x |
4 |
y |
A.9 | B.8 | C.18 | D.16 |
AB |
AC |
3 |
AB |
AC |
3 |
AB |
AC |
1 |
2 |
AB |
AC |
1 |
2 |
1 |
2 |
1 |
x |
4 |
y |
1 |
x |
4 |
y |
y |
x |
4x |
y |
|
1 |
6 |
1 |
3 |
a2+b2 |
a-b |
A.2
| B.
| C.2 | D.1 |
1 |
ab |
1 |
a(a-b) |
A.1 | B.2 | C.3 | D.4 |
OA |
OB |
OC |
1 |
a |
2 |
b |
A.2
| B.2
| C.2 | D.
|
1 |
2+x |
1 |
2+y |
1 |
3 |
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