emm1501
emm1501
10-09-2016
Mathematics
contestada
factoring by completing the square: 3k^2+18k+15=0
Respuesta :
texaschic101
texaschic101
11-09-2016
3k^2 + 18k + 15 = 0
3k^2 + 18k = -15
k^2 + 6k = - 5
k^2 + 6k + 9 = -5 + 9
(k + 3)^2 = 4
k + 3 = (+-) sqrt 4
k = -3 (+-) sqrt 4
k = -3 + 2 = -1
k = -3 - 2 = -5
so k = -1 and -5
Answer Link
VER TODAS LAS RESPUESTAS ( 93+ )
Otras preguntas
What is the difference between electromagnet and electromagnetism?
Word meaning wanting to leave your country to live in another for certain reasons
Why can't you eat or drink before wisdom teeth removed?
Cooked vegetables must be held at what temperature? a. cooked vegetables are not required to be held hot prior to serving b. cooked vegetables must be held a
Who was known for criticizing the traditional roles of women
A dispute between neighbours over property lines is an example of
I neeeed help plssss
A basketball is thrown upwards. The height f(t), in feet, of the basketball at time t, in seconds, is given by the following function: f(t) = −16t2 + 44t + 12
Oxides react with water to form?
Can somebody teach what quadratic function is?
