lg2+lg5=?2log2^8 lg根号100开5次根是多少啊？

lg2+lg5=?2log2^8 lg根号100开5次根是多少啊？ lg^2 5+lg2*lg5+lg2=? lg50+lg2*lg5+lg²2=? 2lg2+lg5/lg√10=? (lg^2)2+lg2*lg5+lg5=lg2(lg2+lg5)=lg2+lg5=1 为什么能把lg2提出来?lg2*lg10为什么等于lg2 lg²2+lg2·lg5+lg5=____________ lg2×lg5=?lg2×lg5=lg?求问号..是lg（2+5）吗? (lg²2-lg2*lg5+lg²)+3lg2*lg5 (lg^2)2+lg2*lg5+lg5 lg²2+lg2×lg5+lg5 lg²2+lg2×lg5+lg²5=? lg^2 5+lg5*lg2+lg2 怎么算lg^2 5+lg5*lg2+lg2 怎么算 对数lg2*lg5=?2lg（5）+2/3 lg8+lg5*lg20+lg2 =lg5^2+lg8^(2/3)+lg5*(lg4+lg5)+lg2 =lg100+lg5+2lg2*lg5+lg2 =2+(lg5+lg2) =2+1 =3 第二个等号lg5*(lg4+lg5)为什么=lg5+2lg2*lg5 lg36-lg4= lg36 x lg9= 2lg5÷3lg2= lg根号3= log2 56 - log2 7 （2是底数）急死.. (lg5)^2+lg5.lg2= lg25+2lg2+lg5*lg20+lg^22=? lg^2 5+lg2*lg5+lg20=计算 (lg2)^2+lg2*lg5+(lg5)^2=