Thread: Finding Zeros in a Polynomial

Hey guys. I'm having trouble with this problem.

Find all of the zeros of the following polynomial and give them in a comma-separated list. If there are no zeros, enter None .

Note: complex numbers should be in the form (a+bi).

First thing you should not is that when x=1, the function is equal to 0.

Using long division, you can find that:



Note that when ,

Using long division, you can find that:



So we have that:



Now just find the values of x that make this expression equal to 0.

ok, I see how the zeros are 1,-5,+2i and -2i. But how do I write 2i in a+bi form?

Originally Posted by badandy328

ok, I see how the zeros are 1,-5,+2i and -2i. But how do I write 2i in a+bi form?

2i in form is