Question

Write a polynomial function of minimum degree with real coefficients whose zeros include those listed. Write the polynomial in standard form.

2, -4, and 1 + 3i

Answer 1

There is one more zero which is the conjugate of 1+3i This is 1-3i

Answer 2

So we have
((X-2)(x+4)(x-(1-3i)(x+(1+3i))

Answer 3

Sorry the last part is (x-(1+3i))

Answer 4

Expanding this to get equation in standrd form

Answer 5

which would it be