lg^3(2)+lg^3(5)+3lg(2)*lg(5)化简

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lg^3(2)+lg^3(5)+3lg(2)*lg(5)化简lg^3(2)+lg^3(5)+3lg(2)*lg(5)化简lg^3(2)+lg^3(5)+3lg(2)*lg(5)化简lg^3(2)+lg

lg^3(2)+lg^3(5)+3lg(2)*lg(5)化简
lg^3(2)+lg^3(5)+3lg(2)*lg(5)化简

lg^3(2)+lg^3(5)+3lg(2)*lg(5)化简
lg^3(2)+lg^3(5)+3lg(2)*lg(5)
=(lg(2)+lg(5))(lg^2(2)+lg^2(5)-lg(2)*lg(5))+3lg(2)*lg(5) (分解lg^3(2)+lg^3(5))
=lg^2(2)+lg^2(5)+2lg(2)*lg(5)
=(lg(2)+lg(5))^2
=1