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

Otras preguntas

The first step in selecting a target market is to study the industry in which the firm intends to compete and determine the different potential target markets i

Juan easily taught his cat to jump through a hoop for the reward of food, but could not get his cat to fetch a ball and return the ball to him. The cat would ch

What is1808.64 rounded to the nearest tenth?

Samantha has to select a college major. She has always wondered about what makes people who they are and how people change over time. Based on this, she might b

What is it called when our individual, genetic, and physiological illness and disease risks are exacerbated by social factors like the neighborhood where we liv

Ellie is a current chemistry student. Which of the following would be a good long-term goal for her? O A. Working as a chemist in a hospital. O B. Building her

3(5x - 2) = 11xI am to find x

mystery_int_1 = 3 mystery_int_2 = 4 mystery_int_3 = 5 You may modify the lines of code above, but don't move them! Above are three values. Run a while loop unti

Determine whether a probability distribution is given. If a probability distribution is given, find its mean and standard deviation. If a probability distributi

Mark earns $8.25 per hour at his summer job. He wants to buy a video game system that costs $206.25. First, write an equation to model the relationship between