x2 |
a2 |
y2 |
b2 |
3 |
4 |
A.
| B.
| C.
| D.
|
x2 |
a2 |
y2 |
b2 |
2 |
3 |
4 |
3 |
3 |
4 |
4 |
9 |
16 |
9 |
2 |
3 |
4 |
3 |
3 |
4 |
32 |
9 |
8 |
9 |
2
| ||
3 |
c |
a |
2
| ||
3 |
x2 |
25 |
y2 |
9 |
x2 |
a2 |
y2 |
b2 |
x2 |
m2 |
y2 |
b2 |
A.锐角三角形 | B.直角三角形 |
C.钝角三角形 | D.锐角或钝角三角形 |
x2 |
A2 |
y2 |
B2 |
x2 |
a2 |
y2 |
b2 |
A.c4+3a4=4a2c2 | B.3c4+a4=4a2c2 |
C.c4+3a4=6a2c2 | D.3c4+a4=6a2c2 |
x2 |
4 |
y2 |
3 |
x2 |
m |
y2 |
n |
3 |
5 |
A.
| ||||||||
B.
| ||||||||
C.
| ||||||||
D.
|
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