2a^(x/2)+1=9, then 32a^x=?
The answer is said to be 2 but I don't know why:(
2a^(x/2)+1=9, then 32a^x=?
2014-06-08 11:58 pm
回答 (2)
2014-06-09 1:07 am
✔ 最佳答案
本人計到如下答案:2a^(x/2)+1=9
2a^(x/2)=8
a^(x/2)=4
[a^(x/2)]^2=4^2
a^x=16
32a^x
=32(16)
=512
是否問題或答案錯了...
參考: ME
2014-06-11 12:41 am
唔可以咁計架
要take log
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收錄日期: 2021-04-15 15:44:03
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20140608000051KK00097