solving for bias currents in non ideal op amp
When taking into account bias current, you still have an ideal op-amp model in there. So \$V^+ = V^- = 0\$ (since you have negative feedback), and the inputs to the ideal op-amp still have 0 current flowing into them.

Writing the various KCL equations for the \$V^+\$ and \$V_{odc}\$ nodes:

\begin{gather}
I_1 = I_{B1}\\
I_1 + I_2 = I_{out}
\end{gather}

Substituting in Ohm's law:

\begin{gather}
\frac{V_{odc}}{R_1} = I_{B1}\\
\frac{V_{odc}}{R_1} + \frac{V_{odc}}{R_2} = I_{out}
\end{gather}

Ignoring the second equation (because it doesn't matter for what you want to find), we can easily find that:
\begin{gather}
\boxed{V_{odc} = R_1 I_{B1}}
\end{gather}

\$I_{B2}\$ cannot be solved for, it can have any arbitrary value. The only thing you can say is it has zero volts across it.