Question

Write a polynomial function of minimum degree with real coefficients whose zeros include those listed. Write the polynomial in standard form.
5, -3, and -1 + 3i
f(x) = x4 - 9x2 - 50x - 150
f(x) = x4 + 12.5x2 - 50x - 150
f(x) = x4 - 4x3 - 15x2 - 25x - 150
f(x) = x4 - 4x3 + 15x2 + 25x + 150

Answer 1

I got B not sure if im correct

Answer 2

A.\[(x-5) (x+3) \left(x^2+2 x+10\right)=0 \]

Answer 3

Thank you!! @robtobey