Question

multiplicar (-2mn2-9m5a3)(8am6n4)

Answer 1

(-2$mn^{2}$ - 9m$5a^{3}$)(8a$m^{6}$6n^{4} [/tex] 
= -48a$m^{7}$$n^{6}$ -72$a^{4}$$m^{6}$$n^{5}$