When there are two numbers one to each other, this means that between them there is a multiplying (noted with x or *)
So, we can write the equation as: ((-3)*(2))*3. (-3)*(2) is -6 (if one
of the multipliers has sign - (is negative) then the product is also
negative. If two multipliers are negative, then the product is positive.
Now, we have (-6)*3, which gives -18. So the simplified form of
((–3)2)3 is -18.
