- #1
jkristia
- 54
- 0
Hi there,
I have over the last couple of month worked my way through Algebra Demystified and College Algebra Demystified (well almost), and I just completed the chapter on polynomial functions and I’m stuck at one of the questions in the chapter review where I’m given a complex root and the asked to match it to one of four functions.
The complex root given is 2-3i, so I know the polynomial for the complex root pair is x^2-4x+13 (I hope I got that right – if not that might be emy problem).
I have then tried to do a long division of this to all of the functions as I expected the remainder to be zero for the correct function, but ..hmm .. that didn’t happen.
Isn’t it correct that I should end up with a zero remainder when I do a long division of x^2-4x+14| polynomial from answer ?
I refuse to look at the answer until I at least have come up with an answer, so I appreciate if someone can point me at what I might be doing wrong.
Thanks
Jesper
I have over the last couple of month worked my way through Algebra Demystified and College Algebra Demystified (well almost), and I just completed the chapter on polynomial functions and I’m stuck at one of the questions in the chapter review where I’m given a complex root and the asked to match it to one of four functions.
The complex root given is 2-3i, so I know the polynomial for the complex root pair is x^2-4x+13 (I hope I got that right – if not that might be emy problem).
I have then tried to do a long division of this to all of the functions as I expected the remainder to be zero for the correct function, but ..hmm .. that didn’t happen.
Isn’t it correct that I should end up with a zero remainder when I do a long division of x^2-4x+14| polynomial from answer ?
I refuse to look at the answer until I at least have come up with an answer, so I appreciate if someone can point me at what I might be doing wrong.
Thanks
Jesper