Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
P.nut1996
Group Title
More help, please??
Using complete sentences, explain how the Rational Root Theorem and Descartes’ Rule of Signs are used to find the zeros of a polynomial function.
 one year ago
 one year ago
P.nut1996 Group Title
More help, please?? Using complete sentences, explain how the Rational Root Theorem and Descartes’ Rule of Signs are used to find the zeros of a polynomial function.
 one year ago
 one year ago

This Question is Closed

Holylion94 Group TitleBest ResponseYou've already chosen the best response.1
i don't know about rational root theorem but Descartes’ Rule of Signs is very simple. you take a polynomial, and see number of sign variation in the equation. then that many positive real roots will be there. eg: x^3x^2+x3=0 sign change like +  +  there are three changes, so there are 3 positive roots. next you replace x by x(x> x) then for that equation number of change in sign results the number of negative roots. so in the given eg: replace x by x x^3x^2x3=0 so sign change is like     that is no change => no negative roots. so this way we can find no. of positive and negative real roots and remaining are complex.
 one year ago

P.nut1996 Group TitleBest ResponseYou've already chosen the best response.0
Thank you so so much! you were a great help! :D
 one year ago

Holylion94 Group TitleBest ResponseYou've already chosen the best response.1
no problem :)
 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.