问题:
若x+y+z=6,xy+yz+zx=11,xyz=6,则
x
yz
+
y
zx
+
z
xy
=______.
若x+y+z=6,xy+yz+zx=11,xyz=6,则
+
+
=______.
x |
yz |
y |
zx |
z |
xy |
参考答案: