Constructing a fifth degree polynomial

Question

Construct a fifth degree polynomial q(x) with the follwing properties : -1 is a zero of the multiplicity 3, 1+2i is another zero, the leading coefficient is 3, and all the remaining coefficients are real.

Can someone please help and explain how to do this (=

Answer 1

3(x+1)^3 [(x-1) ^2 + 4] =

3(x+1)^2 [ x^2 - 2x + 5]

Answer 2

f(x) = 3(x + 1)³(x - 1 - 2i)(x - 1 + 2i)

Can you multiply out and answer?