2(lg2)^2+(lg5)^2+3lg2lg5-lg2=

来源：学生作业帮助网编辑：六六作业网时间：2024/12/23 09:33:28

2(lg2)^2+(lg5)^2+3lg2lg5-lg2=2(lg2)^2+(lg5)^2+3lg2lg5-lg2=2(lg2)^2+(lg5)^2+3lg2lg5-lg2=2(lg2)^2+(lg5

2(lg2)^2+(lg5)^2+3lg2lg5-lg2=
2(lg2)^2+(lg5)^2+3lg2lg5-lg2=

2(lg2)^2+(lg5)^2+3lg2lg5-lg2=
2(lg2)^2+(lg5)^2+3lg2lg5-lg2
=2(lg2)^2+2lg2lg5+(lg5)^2+lg2lg5-lg2
=2lg2(lg2+lg5)+lg5(lg5+lg2)-lg2
=2lg2+lg5-lg2
=lg2+lg5
=1

原式=[2(lg2)^2+2lg2lg5]+[(lg5)^2+lg2lg5]-lg2
=2lg2(lg2+lg5)+lg5(lg2+lg5)-lg2
=2lg2+lg5-lg2
=lg2+lg5
=1

(lg²2-lg2*lg5+lg²)+3lg2*lg5 (lg^2)2+lg2*lg5+lg5 lg²2+lg2×lg5+lg5 lg^2 5+lg2*lg5+lg2=? lg^2 5+lg5*lg2+lg2 怎么算lg^2 5+lg5*lg2+lg2 怎么算 lg5×lg(5×2)+lg2怎莫算具体 lg50+lg2*lg5+lg²2=? 2 lg2 + lg5 / lg√10 2lg2+lg5/lg√10=? 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 3+lg5+(lg2)^2 (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 (lg8+lg1000)lg5+3(lg2)^2+lg^-1+lg0.006 lg²2+ lg2*lg5+ lg5的值 lg²2+lg2·lg5+lg5=____________ 求值lg的平方2+lg2乘lg5+lg5 lg^2（5）+lg2+lg2乘lg5等于多少? lg2×lg5=?lg2×lg5=lg?求问号..是lg（2+5）吗?