Question

x=-2, 1+2i

Answer 1

are these your zeros of a polynomial?? without more info this post isn't answerable

Answer 2

write the polynomial function in standard form with real coefficients whose zeros include those listed .Then graph it? x=-2, 1+2i

Answer 3

alright since you have a complex zero you know there must be a conjugate so you have (x+2)(x-(1+2i))(x-(1-2i)) foil the two complex zeros to get rid of the imaginaries. then foil your binomials together.