三次方程唔識做

2009-04-05 6:44 am
How to solve x^3 - 36x+120=0 ?

回答 (2)

2009-04-05 8:44 am
✔ 最佳答案
Exact ? Approximate ?

2009-04-05 00:44:41 補充:
(-60 + √1872)^1/3 + (-60 - √1872)^1/3
or
-7.25 (corr. to 3 sig. fig.)
2009-04-05 7:05 am
x=-7.249357913....


收錄日期: 2021-04-23 20:39:24
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090404000051KK02135

檢視 Wayback Machine 備份