(4a-5b)^2+(c-3b)^4=o,则a:b:c
问题描述:
(4a-5b)^2+(c-3b)^4=o,则a:b:c
答
因为(4a-5b)^2>且(c-3b)^4>0
若要(4a-5b)^2+(c-3b)^4=o
则4a-5b=0 且c-3b=0
a=5b/4
c=3b
a:b:c=5/4:1:3=5:4:12