Degree 4 Zeros 2 4 I 3 Multiplicity 2

Enter the polynomial

Solution

(x – (-2 – 4i)) ( x – (-2 + 4i)) (x- -3)(x – -3) =   (x +2 + 4i)( x +2 – 4i)(x+3)(x+3) =   [(x+2) + 4i ][ (x+2) – 4i] (x+3)^2 =    [(x+2)^2 + 16][x^2 + 6x + 9]   [x^2 + 4x + 4 + 16][x^2 + 6x + 9]   [x^2 + 4x + 20][x^2 + 6x + 9]   finish it from there