The op-amp is ideal, and I'm supposed to find \(V_{o,B}\).
I know that there is no current going in to any of the + and - terminals of an ideal op-amp. But can there be current going out from either of the two (or negative current in, if you want)?
If not, I guess I can conclude that there is no current going through \(R_1\) and \(R_2\)?