A=3radical 3 x (4radical2-6radical2+9 radical 2-12 radical2)
=3 radical 2 x (-5 radical2)
=(-15radical4)
=(-15) x2=-30
B=2 radical8 x (6 radical 3-8 radical 3-5 radical 3+9 radical 3)
=2 radical 8 x2 radical 3
=4 radical24
AxB =(-30) x 4 radical 24
=(-120 radical 24)
A:B=(-30):4 radical24
=(-7,5 radical24)