Question

can any1 tell me how to find the zeros
y= 3x^4-2x^3+3

Answer 1

can you show how you got the answer you get

Answer 2

well. the possible zeros are plus or minus the factors of 3. then you just plug the factors for synthetic division. then if the remainder is zero then that is a zero. and use Descartes rule of signs to find out the possible positive and negative zeros and remember imaginary zeros come in conjugates.

Answer 3

sorry but im still confused..i have no clue how to do it when it comes to zeros

Answer 4

does your teacher not lecture at all?
what do you know about synthetic division?

Answer 5

she dose..i know everything else so fer but when it came to the zeros i just didnt understand what my professor was trying to explain...so like how would you work out the answer?

Answer 6

first thing I would do is evaluate the degree which is 4. so now we know there CAN BE up to 4 zeros. now we check the change in signs by Descartes rule of signs to get the possible positive zeros and there are 2, so first thing I would do is synthetic division with 3 and see if the remainder is 0 if it is that is a zero. then do it with 1 if it is that is a zero. then with my new polynomial from dividing by both I would have a quadratic term and you will use the quadratic formula to get the complex conjugates or the negative zeros

Answer 7

thnks for trying...im probably gunna have to ask some1 in my class b4 the quiz tomorrow because maybe i learn better in person..thank you anyways

Answer 8

khanacademy.org will help you out im sure.