如果有理数a.b.c满足la-1l+lb+3l+l3c-1l=0,(abc)^125/(a^9b^3c^2)的值._数学解答

如果有理数a.b.c满足la-1l+lb+3l+l3c-1l=0,(abc)^125/(a^9b^3c^2)的值.

人气：286 ℃　时间：2019-12-17 14:51:16

解答

la-1l+lb+3l+l3c-1l=0
a-1=0 a=1
b+3=0 b=-3
3c-1=0 c=1/3
,(abc)^125/(a^9b^3c^2)
=(-1)/-3
=1/3