Question 158876
{{{(9z^3)/(11r^2)}}} * {{{(121r^4)/(81z)}}}
:
Much easier if you cancel, then multiply
11r^2 into 121r^4 and 9 into 81 and z into z^3
:
{{{z^2}}} * {{{(11r^2)/9}}} = {{{(11r^2z^2)/9}}}