Answer:
Step-by-step explanation:
a= -3x-i
b= 3
[tex]b^{2}[/tex]=9
sooo.. a[tex]b^{2}[/tex] = (-3x-i )(9)
-27x -9i
Caveat : :/ if the i happens to be part of a complex number and the squared part is for the quantity (AB)^2 then it would change this answer ..but... I can't tell if that problem is about complex numbers or not, i'm guessing it's not