Show the steps very clearly.
√ = square root
1a) √√x+4 = 17
1b) √√x^2+4 = 17
One question
2007-11-17 12:58 am
回答 (2)
2007-11-24 3:44 am
✔ 最佳答案
問題是(*):1a) √√(x+4) = 17
1b) √√(x^2+4) = 17
還是(**):
1a) √√(x)+4 = 17
1b) √√(x^2) + 4 = 17
如果是(*)
1a) √√(x+4) = 17
x + 4 = 17^4
x = 17^4 - 4
1b) √√(x^2+4) = 17
x² + 4 = 17^4
x = sqrt(17^4 - 4)
如果是(**),
1a) √√(x)+4 = 17
√√x = 13
x = 13^4
x = 28561
1b) √√(x^2) + 4 = 17
x = 13^2
x = 169
參考: eason mensa
2007-11-17 1:24 am
1a) √√x+4 = 17
√√x = 13
x= 13^4
x= 28561
1b) √√x^2+4 = 17
√√x^2 = 13
x= 13^2
x= 169
√√x = 13
x= 13^4
x= 28561
1b) √√x^2+4 = 17
√√x^2 = 13
x= 13^2
x= 169
收錄日期: 2021-04-13 21:35:31
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https://hk.answers.yahoo.com/question/index?qid=20071116000051KK02081