化简二次根式:根号下a方-(a/b)方 (a>0,b

问题描述:

化简二次根式:根号下a方-(a/b)方 (a>0,b
打错了 b<-1

√[a²-(a/b)²]=√[(a²b²-a²)/b²]
=√[a²(b²-1)/b²]
=|a/b|√(b²-1)
=-a√(b²-1)/b懂了谢谢