Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
suneja
Group Title
solve the 4 degree equation
x^4  2x^3 + 4x^2 + 8x  21 =0, given that 2 of its roots are equal in magnitude but opposite in sign.????
 one year ago
 one year ago
suneja Group Title
solve the 4 degree equation x^4  2x^3 + 4x^2 + 8x  21 =0, given that 2 of its roots are equal in magnitude but opposite in sign.????
 one year ago
 one year ago

This Question is Closed

shubhamsrg Group TitleBest ResponseYou've already chosen the best response.0
let roots be a,a,b,c we have aa +b+c = b+c =2 also, abc abc a^2 b  a^2c = a^2(b+c) = 4 you can solve for a from here..seems it will be an imaginary root.. now you have 2 roots i.e. a and a ..should be able to solve for other 2..
 one year ago

shubhamsrg Group TitleBest ResponseYou've already chosen the best response.0
correction : abc abc a^2 b  a^2c = a^2(b+c) = 8 *
 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.