I managed to solve for the value of the compensation resistor (R3 which goes at the positive terminal of the op amp) because I know that R3= R2||R1. I reduced the resistors in the feedback loop of the op amp to 8/3R and took that in parallel with R = (8/11)R which is the right answer.
How do I calculate R3 using Vout due to Ibias as it says in the hint?
With only Ibias active I calculated Vout to be 8*R*Ib. What do I do with this value? How do I mathematically show that R3 should go at the non-inverting terminal of the opamp?