帮我解一道对数算数题lg5·lg20+【(lg2)的平分】=?help me

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帮我解一道对数算数题lg5·lg20+【(lg2)的平分】=?helpme帮我解一道对数算数题lg5·lg20+【(lg2)的平分】=?helpme帮我解一道对数算数题lg5·lg20+【(lg2)的

帮我解一道对数算数题lg5·lg20+【(lg2)的平分】=?help me
帮我解一道对数算数题
lg5·lg20+【(lg2)的平分】=?help me

帮我解一道对数算数题lg5·lg20+【(lg2)的平分】=?help me
lg5*lg20+(lg2)^2
=lg5*(lg4+lg5)+(lg2)^2
=(lg5)^2+2*lg5*lg2+(lg2)^2
=(lg5+lg2)^2
=(lg10)^2
=1