5^(1/2) = (2x^2-4x+4)^(1/2) + (2x^2-2x+1)^(1/2)
thxx
更新1:
simplify
simplify
收錄日期: 2021-04-25 17:18:33
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080211000051KK01806