How to find the roots of the following?
回答 (2)
2016-05-24 4:51 pm
✔ 最佳答案
2x² + 7x + 4 = 0quadratic formula
x = [-7 ± √(7² – 4·2·4)] / [2·2]
= [-7 ± √17] / 4
= -1.75 ± 0.25√17
2016-05-24 4:40 pm
For roots, 2x^2 + 7x + 4 = 0
Solve by Factoring, Completing the Square, or Quadratic Formula x = -b/2a ±√(b² -4ac)/2a (written as the vertex ± intercept offsets)
QF probably easiest
a=2
b=7
c=4
Solve by Factoring, Completing the Square, or Quadratic Formula x = -b/2a ±√(b² -4ac)/2a (written as the vertex ± intercept offsets)
QF probably easiest
a=2
b=7
c=4
收錄日期: 2021-05-01 20:44:07
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160524083244AAGxPiL