Posted by Samya on Tuesday, October 14, 2008 at 4:06pm.
Hello, good afternoon.
I need help with my precalc hw.
we are learning about finding zeros
I dont which method I should use for this problem:
if i is a zero of x^3+3x^2+ix+(4+i)
what do i do? synthetic divison? or long division?
when i did long division i got a werid polynomial with a lot of 'i's in them what do I do with that?
- Precalc - bobpursley, Tuesday, October 14, 2008 at 4:38pm
Well, looking at the i in the end, you know one root has to be i. Start with it, and do division, I might suggest synthetic division.
- Precalc - Samya, Tuesday, October 14, 2008 at 4:39pm
what do u mean looking atthe end "you know one root has to be i" what does that mean?
- Precalc - Samya, Tuesday, October 14, 2008 at 4:42pm
what do i do next?
Answer this Question
More Related Questions
- PreCalc (still confused) - Hello and Happy Halloween! Trying to get this problem...
- Precalc - Given g(x) = (x + 5)(x2 - 6x + 13), find the one real zero of g(x): I ...
- precalc - find the zeros of the function: f(x)=x^3+2x^2-109x-110 I think I need ...
- PreCalc (Just Can't Comprehend) - Find the dimensions of the rectangle with ...
- Precalc - how do u find the zeros of x^3+13x^2-16x+8? w/o a calc?
- trig/PreCalc - Find all real zeros of the function y = -7 + 4
- Precalc - Hello, i need help doing a proof, im pretty sure on how to do it but ...
- Precalc - if a question says is -a a zero of (some equation) can you jsut plug ...
- PreCalc - Hello and Happy Halloween! Trying to get this problem and could use ...
- PreCalc - Find all real zeros of the polynomial f(x)= x^4 -130x^2+3969 and ...