Find a REAL polynomial of degree 3 that has 4 and 3−2𝑖 among its zeros

Question

im struggling with this can someone help

Answer 1

x=3-2i

x-3 =+ or -sqr(-4) =-2i

(x-3)^2 =(-2i)^2 = -4

x^2-6x +9 +5 = 0

x^2-6x+14 = 0

(x-4)(x^2-6x+14) =

x^3-10x^2 +38x - 56 is a 3rd degree polynomial with zeros 4 and 3-2i