若a的倒数是根号6减根号5则a是
问题描述:
若a的倒数是根号6减根号5则a是
答
a = 1 / (√6-√5)
= (√6 + √5)/ (√6-√5)(√6+√5)
= (√6+√5)/ (6-5)
= √6+√5