Question

Help with finding real zeros of a polynomial using synthetic division. f(x) = x4 - 2x3 + 6x2 - 2x + 5
I know that 1-2i is one of the zeros, and that I'm supposed to use synthetic division, but I'm not very good at that...help?

Answer 1

I meant to say complex zeros, whoops.

Answer 2

I don't know the answer but where is the division

Answer 3

What do you mean? I said I'm not good at synthetic division, I got to the second term and got confused. I'm hoping someone can walk me through synthetic division when dividing by the complex term 1-2i

Answer 4

but you don't show a division

Answer 5

I didn't finish it? As I said, I get really confused and have a lot of trouble when I try to do synthetic division with that kind of term, so I was hoping someone could explain how to do that and then I can find the rest of the zeros on my own.

Answer 6

I was curious about your question I will go off and google it
best of luck

Answer 7

Okay. Thanks! I keep trying to follow the format that my book shows, but it doesn't explain what it's doing so it's very confusing.

Answer 8

it have been solved before on OS: http://openstudy.com/study#/updates/51ce46f0e4b063c0de5b7a60

enjoy! :)

Answer 9

Sweet, thank you so much!

Answer 10

welcome - credits go to the original post.

Answer 11

I have looked on purplemath it explains it simply and better than I can on here
it is just like normal division but you carry along the complex part to the end
just look it up

Answer 12

Thank you too, Jamaica!

Answer 13

ok