Question 702362
 I guess you have {{{(x^7(x^7)^-3)/((x-7)^-4)}}} as a nominator, since you have the number {{{7}}} behind variable {{{x}}} "Use positive Exponents" 

{{{(x^7(x^7)^-3)/((x-7)^-4)}}}
  


{{{(x^7(1/(x^7)^3))/(1/(x-7)^4)}}}



{{{(cross(x^7)/(cross(x^7)*(x^7)^2))/(1/(x-7)^4)}}}


{{{(1/(x^7)^2)/(1/(x-7)^4)}}}


{{{(x-7)^4/x^14}}}