Question 841150
(x^5-a^5)/(x-a)


((x-a)(a^4+a^3*x+a^2*x^2+a*x^3+x^4))/(x-a)


a^4+a^3*x+a^2*x^2+a*x^3+x^4


So the expression simplifies to a^4+a^3*x+a^2*x^2+a*x^3+x^4