1, cubic binomial, indicating that the first term is cubic, and the second term must be 0. So m = 3 and n =-5.

(M+N) M=(3-5) 3=-2 3=-8

2. The sixth quartic formula shows that the sum of the times of the highest quartic term is 6, that is, 2+(m+2) = 6 and m = 2.

In addition, the monomial 2x (3n) y (5-m) z is also a sixth-order term, so

(3N)+(5-M)+ 1=6

3N+(5-2)+ 1=6

3N=2

N=2/3