Ask
your own question, for FREE!

Mathematics
33 Online

OpenStudy (anonymous):

find the roots of this equation 2x^3-3x^2+12x+9=0 ?? show the procedure without using calculator??

Still Need Help?

Join the QuestionCove community and study together with friends!

OpenStudy (shadowfiend):

Heh. This is a pretty tough one. You have to factor the equation, but I've been having some trouble doing that.

OpenStudy (anonymous):

The rational root theorem says that any rational (fractional) root of the equation will be of the form p/q, where p is a factor of 9 (so +/- 1, 3, 9) and q is a factor of 2 (so +/- 1, 2). That gives a bunch of choices to try, but they are the only choices. Use synthetic division to see which root(s) divide in to the original without a remainder.

OpenStudy (anonymous):

OpenStudy (anonymous):

I have no idea how to do this but see if this will help you. By the looks of it the root looks really ugly. http://www.wolframalpha.com/input/?i=2x^3-3x^2%2B12x%2B9

Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!

Join our real-time social learning platform and learn together with your friends!

Latest Questions

zebrason:
Frankie's lawn measures 38 yd by 33 yd. In the morning, he mowed 2/3 of the lawn. How many square yards of lawn did he already mow? How much is left to be mowed?

4 hours ago
0 Replies
0 Medals

SamRoman:
What do y'all think of my Cover photo for my next YouTube video?

4 hours ago
11 Replies
1 Medal

AlexisWolfe:
1. At the beginning of Chapter 3, Holden says, u201cIu2019m the most terrific liar you ever saw in your life.

7 hours ago
0 Replies
0 Medals

Zayne2003:
Why was everyone there at the Tabard inn (beginning of Canterbury Tales)?

7 hours ago
8 Replies
1 Medal