Question 940318
{{{(ab^3)(a^3b)}}} ...to simplify, first multiply like terms
This  (a3b3)(a3b) is not correct, you have exponents and there is a rule how to multiply them:

when you are multiplying exponents,and the {{{bases}}} are the {{{same}}},
you ADD the exponents:{{{(ab^3)(a^3b)=(a^1*a^3)(b^3*b^1)=a^(1+3)*b^(3+1)=a^4*b^4}}}