Question

how do i identify real roots?

the question is to identify all the real roots of 4x^4+31x^3-4x^2-89x+22=0

Answer 1

for a 4th degree polynomial? you are kidding.
use a graphing utility
http://www.wolframalpha.com/input/?i=4x^4%2B31x^3-4x^2-89x%2B22%3D0

Answer 2

I suppose this is meant to be a DRoS question...

Answer 3

Have you been studying the rational roots theorem?

Answer 4

DRoS?

Answer 5

I don't know what DRoS is

Answer 6

DescartesRuleofSigns

Answer 7

Thanks

Answer 8

Agree with Satelite though, drudgery.

U get at most 2 or 0 positive and 2 or 0 negative then u have to use RRT or guess a root, etc.