lg(125/2)-lg(5/8)-1+8^(-1/3)+cos660°
问题描述:
lg(125/2)-lg(5/8)-1+8^(-1/3)+cos660°
答
lg(125/2)-lg(5/8)-1+8^(-1/3)+cos660°
=lg100-1+1/2+1/2
=2