How do you find the domain of f+g given f(x)= x^2 - 2x and g(x)= x-5?
the domain of any quadratic equation is all real numbers.
Quadratic functions are parabolas that stretch infinitely in both directions of the axes.
So for any quadratic equation the Domain is always going to be negative infinity, positive infinity.
interval notation (
set builder =
...there is no real need to evaluate
(which is defined for all