please provide steps on bis to solve this problem. thank you

HW (due Mar 6) Solve equation X()X=X for all 22 real-valued matrices, where () modified multiplication where + changed to min and x changed to + (from slides). (HINT 2-vertex graphs w/o neg cycle) ab cd Hint: the top-left position of ab. ab x c d cd equals min{2a,b+c}