muhammadm2013 muhammadm2013 28-11-2019 Mathematics contestada 50 POINTS AND BRIANLIEST:Which of the following expressions is in its simplest form? 8m + 4n - 5mn + 7 15bd + 5 - 2b + 3d + 23 xy + 6xy2 - 7 + 12xy 35 - a2 - ab2 + ab - 2ab2