a=(根号3+根号2)(根号3+2根号)/[(根号3+根号2)/(根号3—根号2)]=3+2根号6+2=5+2根号6
b=(根号3一根号2)(根号3一根号2)/[(根号3+根号2)(根号3-根号2)]=3-2根号6+2=5-2根号6
[根号ab+(a+b)平方]/[根号ab一(a+b)平方]
=[根号(5+2根号6)(5-2根号6)+(5+2根号6+5-2根号6)平方]/[=[根号(5+2根号6)(5-2根号6)-(5+2根号6+5-2根号6)平方]
=[根号(25-24)+10平方]/[根号(25-24)-10平方]
=(1+100)/(1-100)
=-101/99