(3√2-√15+1)/(√3+√5+√6)
= 3√6+3√10+3√12 -√45 -√75 -√90 +√3+√5+√6
= 3√6+3√10+6√3-3√5-5√3-3√10+√3+√5+√6
= 4√6 -2√5 +2√3
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