根号3加根号2分之根号3减根号2=(根号3加根号2乘以根号3减根号2)分之(根号3减根号2)²=3-2根号6+2=5-2根号6
(√3-√2)/(√3+√2)=(√3-√2)²/[(√3+√2)(√3-√2)]=(3+2-2√6)/(3-2)=5-2√6