Question 617458
Find the domain of the rational function. 
f(x)= x+5/ (x^2-64x)
function is undefined when denominator=0
x^2-64=0
x^2=64
x=±√64=±8
Domain: (-∞,-8) U (-8,8) U (8,∞)
{x|x≠-8, x≠8}