(根号5减5)分之根号5等于多少

2025-05-18 18:41:01
推荐回答(1个)
回答1:

(根号5减5)分之根号5
=√5/(√5-5)
=1/(1-√5)
=(1+√5)/[(1-√5)(1+√5)]
=(1+√5)/(-4)
=-(1+√5)/4