中二數題=====11^x+3=1/121
回答 (2)
2007-03-23 3:13 am
✔ 最佳答案
11 ^ (x + 3) = 12111 ^ ( x + 3) = 11^2
(x + 3) = 2
x = -1
2007-03-23 3:30 am
11 ^ (x+3) = 1/121
11 ^ (x+3) = (121) ^ -1
11 ^ (x+3) = (11) ^ -2
x + 3 = -2
x = -5
11 ^ (x+3) = (121) ^ -1
11 ^ (x+3) = (11) ^ -2
x + 3 = -2
x = -5
參考: me
收錄日期: 2021-04-12 20:49:55
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070322000051KK03093