解方程一問,條式岩唔岩?

👨🏻‍🏫 學術台數學

[匿名]

2012-07-22 7:45 pm

(k+3)^2 = 25
呢條方程計唔計得出k=幾多?
唔該哂

回答 (4)

myisland8132

2012-07-22 7:52 pm

✔ 最佳答案

(k + 3)^2 = 25

k + 3 = ±√25

k + 3 = ±5

k = - 8 或 k = 2

👍 0 👎 0

fighting gravity

2012-07-25 2:41 am

(k+3)^2 = 25
k+3=5 或 k+3=-5
k=2 或 k=-8

👍 0 👎 0

HappySiu0

2012-07-23 11:27 pm

(k+3)^2 = 25
(k+3)^2=5^2或(-5)^2
k+3=5或k+3=-5
k=5-3或-5-3
k=-8或2

👍 0 👎 0

用戶27207

2012-07-22 7:48 pm

(k + 3)² = 25
k + 3 = ±√25 = - 5 or 5
k = - 8 or 2

👍 0 👎 0