Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
BMI229
Group Title
Can someone please give me an example of a sum of cubes equation...Please
 one year ago
 one year ago
BMI229 Group Title
Can someone please give me an example of a sum of cubes equation...Please
 one year ago
 one year ago

This Question is Closed

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.1
Can you do complex (imaginary) solutions, or only real solutions?
 one year ago

BMI229 Group TitleBest ResponseYou've already chosen the best response.1
I just need an example worked out all the way.
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.1
x^3 + 27 = 0
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.1
Notice that 27 = 3^3, so this is the sum of the cube of x and the cube of 3. x^3 + 3^3 = 0 The first step is to factor it.
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.1
(x + 3)(x^2  3x + 9) = 0
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.1
Now to solve the equation, do x + 3 = 0 or x^2  3x + 9 = 0 The left side is x = 3. For the right side, use the quadratic formula.
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.1
wlcm
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.