find a polynomial function f x of least degree having only real coefficients with zeros of 0, 3i, and 4+i
x(x-3i)(x+3i)(x-4+i)(x-4-i)
which , when multiplied through =
x^5 - 8 x^4 + 26 x^3 - 72 x^2 + 153 x
So what's the polynomial function f(x)=
+36915 
