更新1:
出錯圖 應該是這題 http://postimg.org/image/9a6wqhsrv/
根式問題化簡下列各式?
回答 (1)
2016-01-04 2:14 am
Sol
(a)
√8*(-√54)*(-√15)
=√8*√54*√15
=√(8*54*15)
=√(2^3*2*3^3*3*5)
=√(2^4*3^4*5)
=2^2*3^2*√5
=36√5
(b)
√45/√90*√8
=√(45/90*8)
=√4
=2
(a)
√8*(-√54)*(-√15)
=√8*√54*√15
=√(8*54*15)
=√(2^3*2*3^3*3*5)
=√(2^4*3^4*5)
=2^2*3^2*√5
=36√5
(b)
√45/√90*√8
=√(45/90*8)
=√4
=2
收錄日期: 2021-04-18 14:18:31
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160103174631AAcPoik