Ask your own question, for FREE!
Mathematics 6 Online
OpenStudy (anonymous):

According to Descartes' rule of signs, how many possible positive real roots could the following polynomial function have? f(x)=3x^4-5x^3+5x^2+5x-2 A. 3 B. 3 or none C. 2 or 0 D. 4

OpenStudy (shamil98):

\[f(x) = +3x^4-5x^3+5x^2+5x-2\] there are three cases where the signs change from positive to negative or negative to positive.

OpenStudy (anonymous):

so would it be B? because you do that thing where you subtract 2 from the number of sign changes?

OpenStudy (shamil98):

group 1 : +3x^4 - 5x^3 group 2: -5x^3 + 5x^2 group 3 :+5x-2 so 3 signs in the positive case.

OpenStudy (shamil98):

I think A. if you counted by two's it would be 3 and 1 .

OpenStudy (anonymous):

it's 3 or 1 :)

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!
Latest Questions
laylasnii13: Can i dm anybody to vent having a rough time ??
10 hours ago 1 Reply 0 Medals
kaelynw: starting to draw a hand
37 minutes ago 16 Replies 2 Medals
Twaylor: Rate it :D (Took 2 days)
10 hours ago 7 Replies 0 Medals
XShawtyX: Art, Short Writing Assignment: Imagining Landscapes
10 hours ago 4 Replies 1 Medal
XShawtyX: Chemistry, Help ud83dude4fud83cudffe
1 day ago 13 Replies 1 Medal
kaelynw: tried a lil smt, the arm is off but i like the other stuff
1 day ago 27 Replies 3 Medals
kaelynw: art igg
1 day ago 14 Replies 1 Medal
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!