Without expanding prove that 7 12 - 3 9 14 - 1 8 13 - 2 = 0 Share with your friends Share 0 Neha Sethi answered this Dear student We have,712-3914-1813-2R2→R2-R3 and R3→R3-R1=712-3111111=0 ∵ R2 and R3 are identical. Regards 0 View Full Answer