I've never properly studied complex numbers but I will soon (in September). Basically: We get taught from a young age that: the real root of f(x)=x²-4 is where the graph of y=f(x) cuts the x axis But is there a graphical representation of a complex root? What's so special about the value x= +/- 2i if g(x)=x²+4 ? Is there a 3D graphical representation of this root? Thanks in advance.