How do you simplify #(-7ab^4c)^3[(2a^2c)^2]^3#?
First of all, let's work with the powers of the round brackets: the power of a product is the power of each single factor
In the same fashion,
So, we have
Again, we have to cube the last parenthesis:
Finally, we multiply the two parenthesis:
Now we multiply similar factors: