问题
填空题
若
|
答案
∵
=x 2
=y 3
,y+z 5
∴
=x 2
,y+z 5
∴
=2 x
,5 y+z
∴
=y+z x
,5 2
∴
=x+y+z x
,5+2 2
即
=x+y+z x
.7 2
若
|
∵
=x 2
=y 3
,y+z 5
∴
=x 2
,y+z 5
∴
=2 x
,5 y+z
∴
=y+z x
,5 2
∴
=x+y+z x
,5+2 2
即
=x+y+z x
.7 2