更新1:
2x-3二次方=4分支9
2x-3二次方=9分支4?
回答 (1)
2016-02-14 9:42 am
情況一：
(2x - 3)² = 9/4
2x - 3 = ±√(9/4)
2x - 3 = 3/2 或 2x - 3 = -3/2
2x = 9/2 或 2x = 3/2
x = 9/4 或 x = 3/4
情況二：
(2x - 3)² = 4/9
2x - 3 = ±√(4/9)
2x - 3 = 2/3 或 2x - 3 = -2/3
2x = 11/3 或 2x = 7/3
x = 11/6 或 x = 7/6
(2x - 3)² = 9/4
2x - 3 = ±√(9/4)
2x - 3 = 3/2 或 2x - 3 = -3/2
2x = 9/2 或 2x = 3/2
x = 9/4 或 x = 3/4
情況二：
(2x - 3)² = 4/9
2x - 3 = ±√(4/9)
2x - 3 = 2/3 或 2x - 3 = -2/3
2x = 11/3 或 2x = 7/3
x = 11/6 或 x = 7/6
收錄日期: 2021-04-18 14:26:41
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160214013031AA9dQWd