Home

Solve any problem
(step by step solutions)
Input table (Matrix, Statistics)
Mode :
SolutionHelp
Solution
Find Find roots 7x^3-28x^2+28x-56

Solution:
Your problem `->` Find roots 7x^3-28x^2+28x-56


`7x^3-28x^2+28x-56`

If a polynomial has integer coefficients, then every rational zero will have the form `p/q`, where `p` is a factor of the constant and `q` is a factor of the leading coefficient.

p = factor of `56`

`:. p = +-1,+-2,+-4,+-7,+-8,+-14,+-28,+-56`

q = factor of `7`

`:. q = +-1,+-7`

Find `+-p/q`, these are the possible roots

`+-1,+-1/7,+-2,+-2/7,+-4,+-4/7,+-7,+-8,+-8/7,+-14,+-28,+-56`






Solution provided by AtoZmath.com
Any wrong solution, solution improvement, feedback then Submit Here
Want to know about AtoZmath.com and me
  
 

Share with your friends, if solutions are helpful to you.
 
Copyright © 2019. All rights reserved. Terms, Privacy





We use cookies to improve your experience on our site and to show you relevant advertising. By browsing this website, you agree to our use of cookies. Learn more