问题
填空题
设
|
答案
设
=x 3
=y 4
=k，z 2
则x=3k，y=4k，z=2k．
则
=x-2y+3z x-3y-z
=3k-8k+6k 3k-12k-2k
=-k -11k
．1 11
故答案为-
．1 11
搜题请搜索小程序“爱下问搜题”
设
|
设
=x 3
=y 4
=k，z 2
则x=3k，y=4k，z=2k．
则
=x-2y+3z x-3y-z
=3k-8k+6k 3k-12k-2k
=-k -11k
．1 11
故答案为-
．1 11
