Question 999717
Real coefficients means complex roots come in complex conjugate pairs.
{{{f(x)=(x-2)(x+6i)(x-6i)}}}
{{{f(x)=(x-2)(x^2+36)}}}
{{{f(x)=x^3+36x-2x^2-72}}}
{{{f(x)=x^2-2x^2+36x-72}}}