Question 763270
Since the coefficients are real, the complex zeros must occur in conjugate pairs, and the multiplicity of a zero tells how many times it occurs, so...



{{{f(x)=(x-(-4+3i))(x-(-4-3i))(x-(-5))^2}}}

and after multiplying ( it's tedious but not hard) we get

{{{f(x) = x^4+18x^3+130x^2+450x+625}}}