Question 70331
 {{{ x^5x^7 }}}
This is the same as
{{{(x*x*x*x*x)*(x*x*x*x*x*x*x)}}}
which is just
{{{(x*x*x*x*x*x*x*x*x*x*x*x)}}}
or {{{x^(5+7) = x^12}}}