A real $8\times 8$ matrix $A$ has $2-i$ and $3+4i$ among its eigenvalues, and their algebraic multiplicity is 2. Write down the possible generalized (real) Jordan matrices for $A$.
How can I use the complex roots condition? I know that for real matrix the complex eigenvalues comes in pairs, right? And the "algebraic multiplicity is 2" means the characteristic equation has double that roots. This is all I can get from this problem.