Answer
$2,3\pm 2i$
$f(x)=(x-2)(x-3+2i)(x-3-2i)$
Work Step by Step
Step 1. Use synthetic division to get a zero $x=2$ as shown in the figure.
Step 2. Use the quotient and solve $x^2-6x+13=0$ to get $x=\frac{6\pm\sqrt {36-4(13)}}{2}=\frac{6\pm\sqrt {-16}}{2}=3\pm 2i$
Step 3. Thus $f(x)=(x-2)(x-3+2i)(x-3-2i)$