If f(x) = 3x^3 -2x^2 + x + 7 and g(x) = 2x^2 - 4, find f(2-3i) where i = sqrt(-1).
THANKS
Are you sure that's the question you're supposed to answer? It's weird that a function g has been specified when it has nothing to do with the problem.
$\displaystyle f(2-3i)=3(2-3i)^3-2(2-3i)^2+(2-3i)+7=\dots$
Now, can you simplify this to the form A+iB where A and B are real numbers?
Edit: I guess I'm too slow.