lga,lgb是2x²-4x+1=0的解,求lgab×(logab+logba)=?

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lga,lgb是2x²-4x+1=0的解,求lgab×(logab+logba)=?
lga,lgb是2x²-4x+1=0的解,求lgab×(logab+logba)=?

lga,lgb是2x²-4x+1=0的解,求lgab×(logab+logba)=?