Question 82608
The given expression is:    



{{{(-3y)(-4x^2y^3)^3}}} 



We first simplify the second term. We get:  



{{{(-64 (x^6) y^9)}}} 



Now multiply this with the first term. 



{{{(-3y)(-64 (x^6) y^9)}}} 



==> {{{(192 (x^6) (y^10))}}}


==>{{{192 (x^6) (y^10)}}} 


Hence, the solution..