Question 131718
{{{(3ab^3-a^2b^2-2a^3b)5a^3}}}
factor out {{{ab}}} from inside the parentheses
{{{(3b^2 - ab - 2a^2)(5a^4)*b}}}
{{{(3b + 2a)(b - a)(5a^4)*b}}} answer
I did the factoring by playing around with 
the possibilities and lucking out