Question 894961
{{{(x^(-2) x^(-3))^4=(x^(-2-3))^4}}}
{{{(x^(-2) x^(-3))^4=(x^(-5))^4}}}
{{{(x^(-2) x^(-3))^4=x^(-20)}}}
{{{(x^(-2) x^(-3))^4=1/x^20}}}