3*(lg2)^2+3(1-lg2)*lg2+2(1-lg2)-lg2+9/2
3*(lg2)^2+3(1-lg2)*lg2+2(1-lg2)-lg2+9/2
2(lg2)2+lg2•lg5+(lg2)2-lg2+1=lg2(2lg
(lg2^2+1)(lg2)^2+1=?
lg25+lg2*lg50+(lg2)^2+1=?
lg5*(1+lg2)+(lg2)^2=
3+lg5+(lg2)^2
1/2(lg2)^2+1/2lg2*lg5+√1/4(lg2)^2-lg2+1=?
(lg3/2lg2+lg3/3lg2)*(lg2/lg3+lg2/2lg3)
(lg3分之2lg2+lg3分之3lg2)(lg2分之lg3+lg2分之2lg3)
lg2^2+lg2*lg5+lg5=lg2(lg2+lg5)+lg5
lg2
lg2 2+lg4*lg5+lg2