Answer
Answer may vary.
$x^4-4x^3-2x^2+20x$
Work Step by Step
Answer may vary.
Step 1. Given $n=4$ and zeros $x=-2,0,3+i$, we can identify the 4th zero as $x=3-i$
Step 2. We can write a possible function as $f(x)=(x+2)(x)(x-3-i)(x-3+i)=x(x+2)(x^2-6x+10)=x^4-4x^3-2x^2+20x$
