find x :
0 = x^4 + 2x^2 - 8x +1
math- factor
2007-11-05 7:30 pm
回答 (1)
2007-11-07 12:42 am
✔ 最佳答案
x^4 + 2x^2 - 8x +1 =(x^2+1)^2-8x
收錄日期: 2021-04-25 17:16:43
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071105000051KK06454