complex zeros of a polynomial function HELP PLEASE

[han10]

The problem states:
Find the complex zeros of the polynomial function.
f(x)= x[sup:21ft96ad]3[/sup:21ft96ad]-13x[sup:21ft96ad]2[/sup:21ft96ad]+14x-45

I don't know how to work this problem, help is greatly appreciated!

 

[Deleted member 4993]

The problem states:
Find the complex zeros of the polynomial function.
f(x)= x[sup:1gctmc0h]3[/sup:1gctmc0h]-13x[sup:1gctmc0h]2[/sup:1gctmc0h]+14x-45

I don't know how to work this problem, help is greatly appreciated!

One way would be to use Newton-Bairstow's method. See:

http://en.wikipedia.org/wiki/Bairstow%27s_method

 

[galactus]

See this site:

http://www.1728.com/cubic.htm


There is a link in the site that goes through the steps of finding the roots.