Polynomial -3 and -2 + i

[kpx001]

can anyone help me review this problem?
find a third degree polynomial equation with real coefficients that has roots -3 and -2 + i

i know (x + 3) and i know that i need a conjugate but this part becomes confusing for me.

is it (x - (-2 + i)) (x - (-2+i)) im very confused with these numbers. is there an easier way to multiply these outs and are the conjugates -2 + i and 2 - i?

 

[pka]

Just expand.
\(\displaystyle \L
\left[ {x + 3} \right]\left[ {x - \left( { - 2 + i} \right)} \right]\left[ {x - \left( { - 2 - i} \right)} \right]\)