Question

Find the polynomial function with the degree and zeros indicated. degree 4, x = -1, x = 3, x = 2i

Answer 1

(x + 1)(x - 3)(x - 2i)(x + 2i)
(x^2 - 2x - 3)(x^2 +4)
x^4 - 2x^3 - 3x^2 + 4x^2 - 8x - 12
x^4 - 2x^3 + x^2 - 8x - 12

(If you have a 2i you must have a -2i)

Answer 2

thanks