Question 619339
What is the domain of 
(((t^3)+8)/((t^2)+6t+8))
When the denominator=0, the expression becomes undefined.
So, set the denominator=0 and solve for x.
(t^2)+6t+8=0
(t+4)(t+2)=0
t=-4
or
t=-2
Domain: all real numbers except x=-4 and -2
(-∞,-4) U (-4,-2) U (-2,∞)