Question

Calculate the complex zeros.

x^3-6.86486x^2-12.65743718x-44.02540042

How would you go about doing that? Since you can't use quadratic..

Answer 1

are you really supposed to be able to solve this without a computer?

Answer 2

ummm u use quadratic formula. Like i programmed a program on my calc so like its easy

Answer 3

Well I got that after I did synthetic division, that's what it says in the steps my teach gave me, but I can't use quadratic to find the complex zeros because it's not x^2. And we have to show our work.

Answer 4

ohhh i didnt see the x^3

Answer 5

I had to use a complicated equation...grrrrr

Answer 6

the only easy way to find complex roots is with the quadratic formula (for quadratics of course)
since it's decimal coefficients it'll be crazy to look for another real zero
I really can't see any way around using a computer

Answer 7

What was the original question?

Answer 8

There was a way but it's is no where near easy.

Answer 9

Calculate the complex zeros in x^3-6.86486x^2-12.65743718x-44.02540042..can't use quadratic..have to show work

Answer 10

Well I'm all for it if it will get this done

Answer 11

Oh man, c'mon FFM this ought to be interesting
I assume you'll just give us a link

Answer 12

Cardano's method: http://en.wikipedia.org/wiki/Cubic_function#Cardano.27s_method

We have this in our undergrad syllabus. But note I have never applied it on something looking this horrible.

Answer 13

I believe the Lagrange's method is somewhat more convulsive and advance.

Answer 14

Holy crap...yeah she can deal with me using a computer and just putting down that's what I did...

Answer 15

Lol, Good luck!

Answer 16

Thanks!

Answer 17

oh yeah, I forgot about that thing
ugy

Answer 18

ugly*