國一科學記號題目求解?
回答 (1)
2018-07-23 12:06 am
✔ 最佳答案
3^n=309^2n+1
=(9^1)(9^2n)
=9(3^2)^2n
=9(3^4n)
=9(3^n)^4
=9(30)^4
=7290000(A)
收錄日期: 2021-04-18 18:08:01
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20180722121922AA63r5l