(lg根号27+lg8-lg根号1000)/lg1、2
问题描述:
(lg根号27+lg8-lg根号1000)/lg1、2
答
(lg√27+lg8-lg√1000)/lg1.2
=(3lg3/3+3lg2-3lg10/2)/lg1.2
=3/2(lg3+2lg2-lg10)/lg1.2
=3/2lg1.2/lg1.2
=3/2