# How do you write a polynomial function given the real zeroes 8,-i, i and coefficient 1?

##### 1 Answer

Nov 28, 2015

#### Answer:

For each zero c, meaning f(c) = 0, your function f(x) has to have a factor (x - c). Your function needs ___ factors. (You fill in!)

#### Explanation:

Concept: If

We have zeroes:

So we will have factors:

Does this have the right (leading) coefficient?

You'll learn more if you finish this yourself!

(shortcut: use difference of squares!)

...//dansmath strikes again! \\...