问题
填空题
若
|
答案
设
=a 2
=b 3
=k,c 4
则a=2k,b=3k,c=4k,
∴
=a b
=2k 3k
;2 3
=a+b-c a-b+c
=2k+3k-4k 2k-3k+4k
.1 3
故答案为:
,2 3
.1 3
若
|
设
=a 2
=b 3
=k,c 4
则a=2k,b=3k,c=4k,
∴
=a b
=2k 3k
;2 3
=a+b-c a-b+c
=2k+3k-4k 2k-3k+4k
.1 3
故答案为:
,2 3
.1 3