| ||
2 |
5 |
| ||
2 |
5 |
5 |
c |
a |
| ||
2 |
5 |
15 |
5 |
x2 |
20 |
y2 |
15 |
x2 |
20 |
y2 |
5 |
8m |
5 |
4m2-20 |
5 |
y1-1 |
x1-4 |
y2-1 |
x2-4 |
(y1-1)(x2-4)+(y2-1)(x1-4) |
(x1-4)(x2-4) |
2(4m2-20) |
5 |
8m(m-5) |
5 |
y2 |
2 |
2 |
OA |
OB |
OP |
0 |
x2 |
k-4 |
y2 |
k-6 |
x2 |
5 |
y2 |
k |
5 |
4 |
x2 |
a2 |
y2 |
b2 |
3 |
3 |
s |
t |
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