log以6为底[根号(2+根号3)×根号(2-根号3)]
=log以6为底[根号[4-3] ]
=log以6为底[1]
=0
log以6为底[根号(2+根号3)+根号(2-根号3)]
= log以6为底[根号4]
=log以6为底[2]