(1)
X^2 - 10x +5 =0
(2)
X^2 - 5x -3=0
(3)
2x^2 - x + 3 =0
(4)
2x^2 + 7x - 6 =0
(5)
X^2 + x + 1 = 0
謝解答...
F5 Maths
2013-05-24 8:50 am
回答 (3)
2013-05-24 9:05 am
✔ 最佳答案
1. 9.4721 or 0.52792.5.5414 or -0.5414
3.no solution
4.0.7122 or -4.2122
5.no solution
參考: Myself
2013-05-25 9:35 pm
其實計數機有計quadratic equation既formula...
2013-05-25 5:54 am
(1) x=9.472135955 or x=0.527864045
(2) x=5.541381264 or x= －0.541381265
(3) no real solution
(4) x= －1.5 or x= －2
(5)no real solution
2013-05-24 21:56:58 補充：
題目4 正確答案
(4) 0.71221445 or x= －4.21221445
(2) x=5.541381264 or x= －0.541381265
(3) no real solution
(4) x= －1.5 or x= －2
(5)no real solution
2013-05-24 21:56:58 補充：
題目4 正確答案
(4) 0.71221445 or x= －4.21221445
收錄日期: 2021-04-13 19:29:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130524000051KK00009