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问题: 求教一道数学计算题

(1-根号3+根号6)/(1+根号2+根号3)

解答:

=(1+sqrt(6)-sqrt(3))(1-sqrt(6)+sqrt(3)/[(1+sqrt(2)+sqrt(3))(1-sqrt(6)+sqrt(3))]
=[1-(sqrt(6)-sqrt(3))^2]/(1-sqrt(6)+sqrt(3)+sqrt(2)-2sqrt(3)+sqrt(6)+sqrt(3)-3sqrt(2)+3
=[(6sqrt(2)-8]/[4-2sqrt(2)]
=[(3sqrt(2)-4]/[2-sqrt(2)]
=[(3sqrt(2)-4][2+sqrt(2)]/(4-2)
=(2sqrt(2)-2)/2
=sqrt(2)-1

注:sqrt(2)=根号2