What is the domain of the function
j(x) = 1/(x + 8) + 1/(x^2 + 8) + 1/(x^4 + 8)
Express your answer as a union of intervals.
Well...... you cannot have a denominator = 0
so x cannot equal -8 all other REAL values of x will result in non-zero denominators
domain = (-∞,-8) U (-8,+∞)